CN106558761A - A kind of method of adjustment of antenna, device, earth station and low-orbit satellite - Google Patents
A kind of method of adjustment of antenna, device, earth station and low-orbit satellite Download PDFInfo
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- CN106558761A CN106558761A CN201510629378.2A CN201510629378A CN106558761A CN 106558761 A CN106558761 A CN 106558761A CN 201510629378 A CN201510629378 A CN 201510629378A CN 106558761 A CN106558761 A CN 106558761A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
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Abstract
The present invention provides a kind of method of adjustment of antenna, device, earth station and low-orbit satellite, is related to the communications field, wherein the method for adjustment of the antenna includes：The current location of low-orbit satellite is obtained, wherein the tracks position that the current location is located for low-orbit satellite described in current time；Obtain the position relationship of the current location and the first position of the first earth station；According to the position relationship, adjust the first phased array antenna of first earth station, so that the wave beam of first phased array antenna points to the current location of the low-orbit satellite in default angular range, uplink antenna gain and down aerial gain are which enhanced, the communication between earth station and low-orbit satellite is realized.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of method of adjustment of antenna, device, earth station and
Low-orbit satellite.
Background technology
With development and the needs of outlying district high speed broadband service of communication technology of satellite, satellite is adopted for high
Ferrum, aircraft, steamer, outlying district offer high-speed wideband business of networking become extensive adopted scheme.
Several significant challenges of satellite communication are：1) power limited of satellite, is typical power limited system
System, if the bandwidth for providing maximum for terrestrial user in limited power is a challenge；2) ground is just
Take, the power of mobile terminal is also limited by power supply, antenna size, if improved in limited power
Upstream bandwidth is a challenge.3) frequency resource of satellite communication is limited, how in limited frequency resource
It is a challenge that bigger bandwidth is provided for all users.
Traditional satellite communication system obtains higher antenna gain to overcome larger channel fading,
Satellite antenna, ground satellite station both sides all adopt parabolic reflector antenna, can greatly improve antenna gain,
But its problem includes：1. parabola antenna typically has the sensing of determination, and earth station antenna is if necessary to track
The low-orbit satellite of motion, or track satellite on a mobile platform, need it is special stable and
Tracking platform, considerably increases complexity.2. the parabola antenna on satellite typically static can only cover specific
Region, there is provided static or quasi-static overlay area, is unable to for transmission power to concentrate on specific ground
Stand.3. due to problem 2, the channeling of satellite up-downgoing must also be static configuration, it is impossible to which dynamic is suitable
Answer the needs of ground dynamic service and quick change.
The frequency resource of satellite communication develops into K, the Ku of high frequency from relatively low L-band, S-band,
Ka wave bands.The rain of high band declines greatly, but wavelength is little, and antenna gain is high, and available bandwidth is big, can with gram
Other shortcomings are taken, therefore obtains the extensive application of New Generation of Satellite Communication System.The high frequencies such as K, Ku, Ka
Section also allows to obtain very high antenna gain by the antenna of the phased-array type of multiple antenna elements, and
The antenna form of phased array can pass through the phase place for adjusting individual antenna, dynamic adjustment velocity of wave direction, can with gram
Take the disadvantages mentioned above of parabola antenna.But, it is limited to size, the complexity of transmitter design of satellite antenna
Degree, the antenna element quantity of the phased array antenna on satellite is limited.And it is theoretical according to multiple antennas, one
Under conditions of fixed antenna element quantity, as shown in figure 1, wave beam spacing A in phased array antenna and
The number of beams that can produce, velocity of wave width B (as shown in Figures 2 and 3) are all limited by.Together
When, the external transmission power of integrated antenna is also limited by satellite overall power.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of method of adjustment of antenna, device, earth station and low rail
Road satellite, improves uplink antenna gain and down aerial gain, realizes between earth station and low-orbit satellite
Communication.
To achieve these goals, the method for adjustment of a kind of antenna provided in an embodiment of the present invention, including：
The current location of low-orbit satellite is obtained, wherein the current location is defended for low orbit described in current time
The tracks position that star is located；
Obtain the position relationship of the current location and the first position of the first earth station；
According to the position relationship, the first phased array antenna of first earth station is adjusted, so that described the
The wave beam of one phased array antenna points to the current location of the low-orbit satellite in default angular range.
Wherein, the method for adjustment of described antenna also includes：
By ascending control channel, the first position of first earth station is sent to the low-orbit satellite,
Wherein, the ascending control channel includes the special access channel and shared control channel of first earth station,
Wherein described shared control channel includes at least one first subcarriers, and the special access channel is included at least
One the second subcarrier, wherein first subcarrier carries the Stochastic accessing or up of first earth station
Control signaling.
Further, the current location for obtaining low-orbit satellite, including：
The tracks information and current time of the low-orbit satellite are obtained, wherein the tracks information
Including orbital tracking；
Obtain the first position of first earth station, and according to the tracks information, it is described current when
Between and the first position, determine the current location of the low-orbit satellite.
Further, the position relationship for obtaining the current location and the first position of the first earth station,
Including：
According to the current location of the current time low-orbit satellite, determine the current location with described first
The angle of the first position of earth station.
Further, first phased array antenna that first earth station is adjusted according to the position relationship,
Including：
According to the angle, phase modulation is carried out to the first phased array antenna of first earth station.
Further, the tracks information and current time for obtaining the low-orbit satellite, including：
By down control channel, the fortune broadcasted to first earth station from the low-orbit satellite is obtained
Dynamic orbit information, wherein, the down control channel includes downlink dedicated control channel and common broadcast channel,
Wherein described common broadcast channel includes at least one orthogonal frequency division multiplex OFDM subcarrier, described descending
DCCH includes at least one the 3rd subcarriers, and the common broadcast channel is for the low orbit
In the beam coverage area of satellite, all earth stations carry out beam shaping.
The embodiment of the present invention also provides a kind of method of adjustment of antenna, including：
Obtain the first position of the first earth station；
Obtain the position relationship of the current location and the first position of low-orbit satellite；
According to the position relationship, the second phased array antenna of the low-orbit satellite is adjusted, so that described the
The wave beam of two phased array antenna points to the first position of first earth station in default angular range, wherein
The tracks position that the current location is located for low-orbit satellite described in current time.
Further, the first position for obtaining the first earth station, including：
The first position of first earth station is obtained by ascending control channel, wherein, the upload control
Channel includes the special access channel and shared control channel of first earth station, wherein the shared control
Channel includes at least one first subcarriers, and the special access channel includes at least one second subcarriers,
Wherein described first subcarrier carries the Stochastic accessing or upstream control signaling of first earth station.
Further, the first position that the first earth station is obtained by ascending control channel, including：
By the ascending control channel, the upward signal of first earth station is obtained；
The upward signal is parsed, the first position of first earth station is determined.
Further, the position relationship of the current location and the first position for obtaining low-orbit satellite,
Including：
Obtain the first position of first earth station, and the tracks information according to the low-orbit satellite,
The current time and the first position, wherein the tracks information includes orbital tracking；
Obtain the current location of current time described in the low-orbit satellite, according to the current location with it is described
The angle of the first position of the first earth station.
Further, it is described according to the position relationship, adjust the second phased array day of the low-orbit satellite
Line, including：
According to the angle, phase modulation is carried out to the second phased array antenna of the low-orbit satellite.
Wherein, the method for adjustment of described antenna also includes：
Obtain the resource allocation request of the second earth station；
According to the resource allocation request, the subcarrier of unappropriated down control channel is judged whether,
Wherein, the down control channel includes downlink dedicated control channel and common broadcast channel, wherein the public affairs
Broadcast channel includes at least one orthogonal frequency division multiplex OFDM subcarrier, the downlink dedicated control letter altogether
Road includes at least one the 3rd subcarriers, and the common broadcast channel is the wave beam for the low-orbit satellite
In overlay area, all earth stations carry out beam shaping；
If existing, the subcarrier of the unappropriated down control channel is distributed to into the second earth station；
If not existing, it is determined that at least one minimum subcarrier of the bearing capacity of current all subcarriers, and by institute
State a subcarrier at least one minimum subcarrier of bearing capacity and distribute to and meet the second of prerequisite
Earth station, wherein the prerequisite is that second earth station is big with the distance between first earth station
In predeterminable range.
The embodiment of the present invention also provides a kind of adjusting apparatus of antenna, is applied to earth station, described antenna
Adjusting apparatus include：
First acquisition module, for obtaining the current location of low-orbit satellite, wherein the current location is to work as
The tracks position that low-orbit satellite described in the front time is located；
First processing module, for obtaining the position pass of the current location and the first position of the first earth station
System；
First adjusting module, for according to the position relationship, adjust first earth station first is phased
Array antenna, so as to the wave beam of first phased array antenna points to the low orbit in default angular range defend
The current location of star.
The embodiment of the present invention also provides a kind of adjusting apparatus of antenna, is applied to low-orbit satellite, described day
The adjusting apparatus of line include：
Second acquisition module, for obtaining the first position of the first earth station；
Second processing module, the position for obtaining the current location and the first position of low-orbit satellite are closed
System；
Second adjusting module, for according to the position relationship, adjust the low-orbit satellite second is phased
Array antenna, so that the wave beam of second phased array antenna points to first ground in default angular range
The first position stood, wherein the tracks that the current location is located for low-orbit satellite described in current time
Position.
The embodiment of the present invention also provides a kind of earth station, including：The adjusting apparatus of antenna described above.
The embodiment of the present invention also provides a kind of low-orbit satellite, including：The adjusting apparatus of antenna described above.
The above-mentioned technical proposal of the embodiment of the present invention has the beneficial effect that：
In the scheme of the embodiment of the present invention, the tracks position being located due to each time low-orbit satellite is not
Together, by obtain low-orbit satellite current location, and then according to the real-time current location of low-orbit satellite with
The position relationship of the first earth station, adjusts the wave beam of the first phased array antenna of the first earth station, in default folder
The current location of the low-orbit satellite, so change according to the time, by low orbit are pointed in angle range
Phased array antenna technology and beamforming technique between satellite and earth station, it is ensured that the ripple of the first earth station
Beam points to low-orbit satellite all the time, improves uplink antenna gain and down aerial gain, realizes communication.
Description of the drawings
Structural representations of the Fig. 1 for phased array antenna；
Fig. 2 is one of beam angle schematic diagram；
Fig. 3 is one of beam angle schematic diagram；
One of the step of Fig. 4 is the method for adjustment of the antenna of embodiment of the present invention schematic diagram；
One of the step of Fig. 5 is the method for adjustment of the antenna of embodiment of the present invention schematic diagram；
Structural representations of the Fig. 6 for the uplink/downlink channel frame structure of the embodiment of the present invention；
Fig. 7 is one of structural representation of adjusting apparatus of antenna of the embodiment of the present invention；
Fig. 8 is one of structural representation of adjusting apparatus of antenna of the embodiment of the present invention.
Specific embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with attached
Figure and specific embodiment are described in detail.
The embodiment of the present invention is defended for the low orbit that there is earth station antenna inconvenience pursuit movement in prior art
Star, be difficult to dynamic frequency division multiplexing or due to satellite antenna limit it is larger, so as to be difficult improve antenna increase
The problem of benefit, there is provided a kind of method of adjustment of antenna, device, earth station and low-orbit satellite, by measurement
Measurement low-orbit satellite position, due to earth station's defined location, adjusts to phased array antenna in real time in real time
Phase so that in preset range, low-orbit satellite mutually points to other side with earth station to wave beam, so by ripple
Beam shaping can improve antenna gain.
First embodiment
As shown in figure 4, the method for adjustment of the antenna, can include：
Step 11, obtains the current location of low-orbit satellite, wherein the current location is current time institute
State the tracks position at low-orbit satellite place；
Step 12, obtains the position relationship of the current location and the first position of the first earth station；
Step 13, according to the position relationship, adjusts the first phased array antenna of first earth station,
So that the wave beam of first phased array antenna points to working as the low-orbit satellite in default angular range
Front position.
In above-mentioned steps 11 into step 13, due to the tracks position that each time low-orbit satellite is located
Difference is put, by the current location (step 11) for obtaining low-orbit satellite, and then according to low-orbit satellite reality
When current location and the first earth station position relationship (step 12), adjust the first phase of the first earth station
The wave beam of control array antenna, points to the current location (step of the low-orbit satellite in default angular range
13), the change so according to the time, by the phased array antenna technology between low-orbit satellite and earth station
And beamforming technique, it is ensured that the wave beam of the first earth station points to low-orbit satellite all the time, improves up
Antenna gain and down aerial gain, realize communication.
It should be noted that：Above-mentioned first earth station possesses stationkeeping ability, can calculate itself first
Put, wherein the first position includes the orientation information of longitude, latitude, the geographical coordinate of height and earth station；
Above-mentioned default angular range is referred to and is measured according to test of many times, due to the beam position the of low-orbit satellite
There is misalignment angle during one earth station, or the first earth station beam position low-orbit satellite when there is deviation
Angle, it is therefore desirable to point in default angular range, the default angular range may be at 0 degree and arrive
In the range of 90 degree.
In addition, in above-mentioned steps 11, the tracks information of above-mentioned low-orbit satellite can also be deposited in advance
The tracks diverse location that each time corresponding low-orbit satellite in the first earth station is located is stored up, this
Sample just reduces the tracks information for being required for reacquiring low-orbit satellite every time, reduces information exchange
Load, improve adjustment phased antenna efficiency.
Further, the tracks information of above-mentioned low-orbit satellite can also be to the first ground by broadcast mode
Broadcasted at station.
Second embodiment
In order to interact between the information and low-orbit satellite of the first earth station, and improve interactive information
Safety, the method for adjustment of the antenna also include：
Step 14, by ascending control channel, sends the first position of first earth station to described low
Orbiter, wherein, the ascending control channel includes the special access channel of first earth station and is total to
With control channel, wherein the shared control channel includes at least one first subcarriers, the special access
Channel includes at least one second subcarriers, wherein first subcarrier carry first earth station with
Machine is accessed or upstream control signaling.
It should be noted that：Ascending control channel adopts different frequencies or carrier wave, up channel complete frames knot
(Orthogonal Frequency Division Multiple Access, orthogonal frequency are more based on OFDMA for structure
Location) design, according to OFDM (Orthogonal Frequency Division between multiple carrier waves
Multiplexing, orthogonal frequency division multiplexi) dense arrangement, whole available frequency band is expanded on frequency domain,
The time can be determined as a frame using per section in time, specifically per determination time can be according to demand
Set, if the length of described per determination time is 10ms.
3rd embodiment
The method of adjustment of the antenna, can include：
Step 111, obtains the tracks information and current time of the low-orbit satellite, wherein the fortune
Dynamic rail road information includes orbital tracking；
Step 112, obtains the first position of first earth station, and according to the tracks information,
The current time and the first position, determine the current location of the low-orbit satellite；
Step 131, according to the current location of the current time low-orbit satellite, determines the current location
With the angle of the first position of first earth station；
Step 141, according to the angle, carries out phase modulation to the first phased array antenna of first earth station.
Above-mentioned steps 111 into step 141, by the orbital tracking of the tracks information of low-orbit satellite
And first earth station first position, determine the first position of low-orbit satellite current location and the first earth station
Angle, and then phase modulation is carried out to the first phased array antenna of the first earth station according to angle, so by ripple
Beam shaping can improve antenna gain, realize effectively logical between single low-orbit satellite and the first earth station
Letter.
It should be noted that：The subcarrier of each user is according to the relative position between low-orbit satellite, earth station
Put, the direction of antenna and angle need the direction that beam shaping is carried out by phased array antenna to determine；It is different
The beam shaping of user is completely independent.
Fourth embodiment
The method of adjustment of the antenna, can include：
Step 1111, by down control channel, obtains from the low-orbit satellite to first ground
Face station broadcast tracks information, wherein, the down control channel include downlink dedicated control channel and
Common broadcast channel, wherein the common broadcast channel includes at least one orthogonal frequency division multiplex OFDM
Carrier wave, the downlink dedicated control channel include at least one the 3rd subcarriers, and the common broadcast channel is
In beam coverage area for the low-orbit satellite, all earth stations carry out beam shaping；
Step 112, obtains the first position of first earth station, and according to the tracks information,
The current time and the first position, determine the current location of the low-orbit satellite；
Step 131, according to the current location of the current time low-orbit satellite, determines the current location
With the angle of the first position of first earth station；
Step 141, according to the angle, carries out phase modulation to the first phased array antenna of first earth station.
In the embodiment of the present invention, low-orbit satellite simultaneously services terrestrial station when, also using low-orbit satellite and ground
Up channel frame structure and down channel frame structure between the station of face realizes communication, it is also possible to according to different business
The ground satellite station of demand, can realize channeling by ascending control channel and down control channel, enter
And reach higher throughput of system.
It should be noted that：Down control channel adopts different frequencies or carrier wave, down channel complete frames knot
(Orthogonal Frequency Division Multiple Access, orthogonal frequency are more based on OFDMA for structure
Location) design, according to OFDM (Orthogonal Frequency Division between multiple carrier waves
Multiplexing, orthogonal frequency division multiplexi) dense arrangement, whole available frequency band is expanded on frequency domain,
The time can be determined as a frame using per section in time, specifically per determination time can be according to demand
Set, if the length of described per determination time is 10ms.
Further, above-mentioned common broadcast channel is made up of several OFDM subcarriers, in frequency, these
Subcarrier can concentrate on continuous subcarrier, also be dispersed in whole frequency range；The common broadcast channel is not adopted
With the beam shaping for user, but for the beam shaping in coverage；In all overlay areas
Earth station user can receive the common broadcast channel of enough power；
Downlink dedicated control channel can also be made up of one or more subcarrier, and wherein control signal is directed to
Each user carries out beam shaping；Multiple users can be multiplexed the beam shaping of a subcarrier, can be multiple
Same subcarrier is multiplexed between user.
5th embodiment
As shown in figure 5, the method for adjustment of the antenna, including：
Step 21, obtains the first position of the first earth station；
Step 22, obtains the position relationship of the current location and the first position of low-orbit satellite；
Step 23, according to the position relationship, adjusts the second phased array antenna of the low-orbit satellite,
So that the wave beam of second phased array antenna points to the of first earth station in default angular range
One position, wherein the tracks position that the current location is located for low-orbit satellite described in current time.
In above-mentioned steps 21 into step 23, due to the tracks position that each time low-orbit satellite is located
Difference is put, by the first position (step 21) for obtaining the first earth station, and then according to low-orbit satellite reality
When current location and the first earth station position relationship (step 22), adjust the second phase of low-orbit satellite
The wave beam of control array antenna, points to the current location (step 23) of low-orbit satellite in default angular range,
Change so according to the time, it is ensured that the wave beam of low-orbit satellite points to the first earth station all the time, improves
Uplink antenna gain and down aerial gain, realize communication.
It should be noted that：Above-mentioned first earth station possesses stationkeeping ability, can calculate itself first
Put, wherein the first position includes the orientation information of longitude, latitude, the geographical coordinate of height and earth station,
By ascending control channel, low-orbit satellite can receive the first position of the first earth station；
Above-mentioned default angular range is referred to and is measured according to test of many times, due to the beam position the of low-orbit satellite
There is misalignment angle during one earth station, or the first earth station beam position low-orbit satellite when there is deviation
Angle, it is therefore desirable to point in default angular range, the default angular range may be at 0 degree and arrive
In the range of 90 degree.
In addition, the tracks information of above-mentioned low-orbit satellite can also be stored in advance in the first earth station
The tracks diverse location that is located of each time corresponding low-orbit satellite, which reduces every time
Need to reacquire the tracks information of low-orbit satellite, reduce the load of information exchange, improve tune
The efficiency of whole phased antenna.
Further, as the channel between low-orbit satellite and earth station is the channel of power limited, noise limited,
In order to highest efficiency utilizes power resource, the modulator approach of each channel is limited to BPSK (Binary
Phase Shift Keying, binary phase shift keying), QPSK (Quadrature Phase Shift Keyin,
QPSK), PS-QPSK (polarization Switching Quadrature Phase Shift Keyin
Polarization switching QPSK), the modulator approach has highest power efficiency.So due to above-mentioned day
The method of adjustment of line using the existing ripe phased array antenna technology being based on, OFDM technology,
Beam forming technique and PS-QPSK modulation techniques, the embodiment of the present invention have relatively low complexity.
Sixth embodiment
The method of adjustment of the antenna, including：
Step 211, obtains the first position of first earth station by ascending control channel, wherein, institute
Stating ascending control channel includes the special access channel and shared control channel of first earth station, wherein institute
Stating shared control channel includes at least one first subcarriers, and the special access channel includes at least one the
Two subcarriers, wherein first subcarrier carries the Stochastic accessing or upload control letter of first earth station
Order；
Step 22, obtains the position relationship of the current location and the first position of low-orbit satellite；
Step 23, according to the position relationship, adjusts the second phased array antenna of the low-orbit satellite,
So that the wave beam of second phased array antenna points to the of first earth station in default angular range
One position, wherein the tracks position that the current location is located for low-orbit satellite described in current time.
In the embodiment of the present invention, by the first position of the first earth station of ascending control channel reception, and due to
The presence of ascending control channel and down control channel, low-orbit satellite service multiple earth stations (its number simultaneously
Measure the beam shaping quantity of the phased array antenna far more than low-orbit satellite), satellite and ground can be solved
Stand power limited, the problem that algorithm is simple and antenna amount and beam shaping of phased antenna are limited.
Due to comparing with the low-orbit satellite speed of service, the train of ground object, steamer, the speed of aircraft is very
It is low, geo-stationary is can be regarded as substantially, below assumes that low-orbit satellite earth station is resting state.
Therefore the effectiveness of the embodiment of the present invention is not affected.
7th embodiment
The method of adjustment of the antenna, can include：
Step 2111, by the ascending control channel, obtains the upward signal of first earth station；
Step 2112, parses the upward signal, determines the first position of first earth station；
Step 22, obtains the position relationship of the current location and the first position of low-orbit satellite；
Step 23, according to the position relationship, adjusts the second phased array antenna of the low-orbit satellite,
So that the wave beam of second phased array antenna points to the of first earth station in default angular range
One position, wherein the tracks position that the current location is located for low-orbit satellite described in current time.
In the embodiment of the present invention, by the first position of the first earth station of ascending control channel reception, and due to
Upward signal in ascending control channel carries the first position of the first earth station, then through low-orbit satellite
Parsing obtains specific first position, so not only can improve antenna gain by beam shaping, realizes
Efficient communication between single low-orbit satellite and the first earth station, and low-orbit satellite services multiple simultaneously
Earth station's (beam shaping quantity of its quantity far more than the phased array antenna of low-orbit satellite), it is also possible to
Solve satellite and earth station's power limited, algorithm is simple and antenna amount and beam shaping of phased antenna are limited
Problem.
8th embodiment
The method of adjustment of the antenna, can include：
Step 21, obtains the first position of the first earth station；
Step 221, obtains the first position of first earth station, and according to the fortune of the low-orbit satellite
Dynamic orbit information, the current time and the first position, wherein the tracks information includes track
Radical；
Step 222, obtains the current location of current time described in the low-orbit satellite, according to described current
The angle of position and the first position of first earth station；
Step 231, according to the angle, carries out phase modulation to the second phased array antenna of the low-orbit satellite.
Above-mentioned steps 21 into step 231, by the orbital tracking of the tracks information of low-orbit satellite
And first earth station first position, determine the first position of low-orbit satellite current location and the first earth station
Angle, and then phase modulation is carried out to the second phased array antenna of low-orbit satellite according to angle, so by ripple
Beam shaping can improve antenna gain, realize effectively logical between single low-orbit satellite and the first earth station
Letter.
9th embodiment
The method of adjustment of the antenna, can include：
Step 211, obtains the first position of first earth station by ascending control channel, wherein, institute
Stating ascending control channel includes the special access channel and shared control channel of first earth station, wherein institute
Stating shared control channel includes at least one first subcarriers, and the special access channel includes at least one the
Two subcarriers, wherein first subcarrier carries the Stochastic accessing or upload control letter of first earth station
Order；
Step 221, obtains the first position of first earth station, and according to the fortune of the low-orbit satellite
Dynamic orbit information, the current time and the first position, wherein the tracks information includes track
Radical；
Step 222, obtains the current location of current time described in the low-orbit satellite, according to described current
The angle of position and the first position of first earth station；
Step 231, according to the angle, carries out phase modulation to the second phased array antenna of the low-orbit satellite.
In the embodiment of the present invention, by the first position of the first earth station of ascending control channel reception, and due to
The presence of ascending control channel and down control channel, low-orbit satellite service multiple earth stations (its number simultaneously
Measure the beam shaping quantity of the phased array antenna far more than low-orbit satellite), and according to angle to low orbit
Second phased array antenna of satellite carries out phase modulation, so can improve antenna gain by beam shaping, real
Existing efficient communication between single low-orbit satellite and the first earth station, it is also possible to solve satellite and earth station's work(
Rate is limited, the problem that algorithm is simple and antenna amount and beam shaping of phased antenna are limited.
Tenth embodiment
The method of adjustment of the antenna, can include：
Step 2111, by the ascending control channel, obtains the upward signal of first earth station；
Step 2112, parses the upward signal, determines the first position of first earth station；
Step 221, obtains the first position of first earth station, and according to the fortune of the low-orbit satellite
Dynamic orbit information, the current time and the first position, wherein the tracks information includes track
Radical；
Step 222, obtains the current location of current time described in the low-orbit satellite, according to described current
The angle of position and the first position of first earth station；
Step 231, according to the angle, carries out phase modulation to the second phased array antenna of the low-orbit satellite.
In the embodiment of the present invention, the first position of the first earth station is received by ascending control channel, due to upper
Upward signal in row control channel carries the first position of the first earth station, then through low-orbit satellite solution
Analysis obtains specific first position, so can improve antenna gain by beam shaping, realize single low
Efficient communication between orbiter and the first earth station, it is also possible to solve satellite and earth station's power limited,
The problem that algorithm is simple and antenna amount and beam shaping of phased antenna are limited.
11st embodiment
The method of adjustment of the antenna, also includes：
Step 24, obtains the resource allocation request of the second earth station；Wherein described second earth station is any
Need the earth station being allocated；
Step 25, according to the resource allocation request, judges whether unappropriated descending control letter
The subcarrier in road, wherein, the down control channel includes downlink dedicated control channel and common broadcast channel,
Wherein described common broadcast channel includes at least one orthogonal frequency division multiplex OFDM subcarrier, described descending
DCCH includes at least one the 3rd subcarriers, and the common broadcast channel is for the low orbit
In the beam coverage area of satellite, all earth stations carry out beam shaping；
The subcarrier of the unappropriated down control channel, if existing, is distributed to the by step 26
Two earth stations；
Step 27, if not existing, it is determined that at least one minimum son of the bearing capacity of current all subcarriers is carried
Ripple, and a subcarrier at least one bearing capacity minimum subcarrier is distributed to meet preset bar
Second earth station of part, wherein the prerequisite is between second earth station and first earth station
Distance be more than predeterminable range.
Above-mentioned steps 24 distribute to by the subcarrier that would sit idle for or bearing capacity is less into step 27
Two earth stations, so can realize multiplexing to different earth stations in subcarrier, be capable of achieving higher up
Transfer rate and downlink transmission rate, when low-orbit satellite services multiple earth stations, also using low orbit simultaneously
Up-downgoing channel frame structure between satellite and earth station, is multiplexed in subcarrier to different users,
Realize communication.
It should be noted that：Above-mentioned first earth station and above-mentioned second earth station as user, subscriber channel by
Several subcarriers are constituted.In frequency, in time, each subscriber channel is in time to the greatest extent for each user
Amount takes whole pot lifes of a frame；When user rate need not take the one of an independent subcarrier really
During frame time, multiple users can (Time Division Multiple Access, time-division be more according to TDMA
Location) time slice of same subcarrier, the user User10 and User14 in such as Fig. 6 are taken respectively；
Multiple users' (having the earth station of relatively large distance on the ground) being spatially separated from can share together
User1, User2 and User3 in one sub-carrier channels, such as figure 6 above；
Can be shared with some subcarrier between different users, it is possibility to have other subcarriers are not shared,
Or other subcarriers are shared with other users.
The embodiment of the present invention is implemented as follows.
Due to the phased array antenna limited amount on low-orbit satellite, the generation in same subcarrier is mutually concerned with
Disturb less, the higher number of beams of gain is limited；Therefore in same subcarrier, the total number of users of multiplexing needs control
In below M, M is a determination number to system, by the antenna amount of low-orbit satellite phased array, beam shaping
Ability is determined.
When low-orbit satellite is when needing to user resource allocation, the subcarrier frequency still not taken is paid the utmost attention to
Rate resource；If all subcarriers have taken, in all subcarriers, distributing user is less
In subcarrier, some subcarriers are randomly choosed, if new user is remote enough with the ground distance for having user,
And the squint between user for low-orbit satellite is sufficiently large, the insulation request of multi beamforming is met,
Then new user can be distributed in the subcarrier for selecting.If not meeting above-mentioned condition, other are selected again
Random sub carrier wave in subcarrier, till meeting condition, or all subcarriers are all unsatisfactory for condition, then
Distribution failure.
12nd embodiment
As shown in fig. 7, the adjusting apparatus of the antenna, are applied to earth station, can include：
First acquisition module 31, for obtaining the current location of low-orbit satellite, wherein the current location
The tracks position that the low-orbit satellite described in current time is located；
First processing module 32, for obtaining the position of the current location and the first position of the first earth station
Put relation；
First adjusting module 33, for according to the position relationship, adjusting the first of first earth station
Phased array antenna, so that the wave beam of first phased array antenna points to the low rail in default angular range
The current location of road satellite.
In the embodiment of the present invention, as the tracks position that each time low-orbit satellite is located is different, lead to
The current location that the first acquisition module 31 obtains low-orbit satellite is crossed, and then first processing module 32 is according to low
The position relationship of the real-time current location of orbiter and the first earth station, most after the first adjusting modules of Jing 33
The wave beam of the first phased array antenna of the first earth station is adjusted, and the low orbit is pointed in default angular range
The current location of satellite, the so change according to the time, by phased between low-orbit satellite and earth station
Array antenna technology and beamforming technique, it is ensured that the wave beam of the first earth station points to low-orbit satellite all the time,
Uplink antenna gain and down aerial gain are improve, communication is realized.
It should be noted that the device that the present invention is provided is the device of the method for adjustment of antenna, then above-mentioned antenna
All embodiments of method of adjustment are applied to the device, and can reach same or analogous beneficial effect.
13rd embodiment
In order that can interact between the information of the first earth station and low-orbit satellite, and improve interaction letter
The safety of breath, the adjusting apparatus of the antenna also include：
Sending module, for by ascending control channel, sending the first position of first earth station to institute
Low-orbit satellite is stated, wherein, the ascending control channel includes the special access channel of first earth station
And shared control channel, wherein the shared control channel includes at least one first subcarriers, it is described special
Accessing channel includes at least one second subcarriers, wherein first subcarrier carries first earth station
Stochastic accessing or upstream control signaling.
It should be noted that：Ascending control channel adopts different frequencies or carrier wave, up channel complete frames knot
(Orthogonal Frequency Division Multiple Access, orthogonal frequency are more based on OFDMA for structure
Location) design, according to OFDM (Orthogonal Frequency Division between multiple carrier waves
Multiplexing, orthogonal frequency division multiplexi) dense arrangement, whole available frequency band is expanded on frequency domain,
The time can be determined as a frame using per section in time, specifically per determination time can be according to demand
Set, if the length of described per determination time is 10ms.
14th embodiment
The adjusting apparatus of the antenna, can include：
First acquisition submodule, for obtaining the tracks information and current time of the low-orbit satellite,
Wherein described tracks information includes orbital tracking；
Second sub-acquisition module, for obtaining the first position of first earth station, and according to the motion
Orbit information, the current time and the first position, determine the current location of the low-orbit satellite；
First processes submodule, for the current location according to the current time low-orbit satellite, determines institute
State the angle of current location and the first position of first earth station；
First adjustment submodule, is used for, according to the angle, the first phased array to first earth station
Antenna carries out phase modulation.
In the embodiment of the present invention, by orbital tracking and first ground of the tracks information of low-orbit satellite
The first position stood, determines the angle of low-orbit satellite current location and the first position of the first earth station, enters
And phase modulation is carried out according to angle to the first phased array antenna of the first earth station, so can be with by beam shaping
Antenna gain is improve, the efficient communication between single low-orbit satellite and the first earth station is realized.
It should be noted that：The subcarrier of each user is according to the relative position between low-orbit satellite, earth station
Put, the direction of antenna and angle need the direction that beam shaping is carried out by phased array antenna to determine；It is different
The beam shaping of user be completely independent.
15th embodiment
The adjusting apparatus of the antenna, can include：
First acquisition unit, for by down control channel, obtaining from the low-orbit satellite to described
The tracks information of the first earth station broadcast, wherein, the down control channel includes downlink dedicated control
Channel and common broadcast channel, wherein the common broadcast channel includes at least one OFDM
OFDM subcarriers, the downlink dedicated control channel include at least one the 3rd subcarriers, described public
Broadcast channel is that all earth stations carry out beam shaping in beam coverage area for the low-orbit satellite；
Second sub-acquisition module, for obtaining the first position of first earth station, and according to the motion
Orbit information, the current time and the first position, determine the current location of the low-orbit satellite；
First processes submodule, for the current location according to the current time low-orbit satellite, determines institute
State the angle of current location and the first position of first earth station；
First adjusts submodule, for according to the angle, the first phased array day to first earth station
Line carries out phase modulation.
In the embodiment of the present invention, low-orbit satellite simultaneously services terrestrial station when, also using low-orbit satellite and ground
Up channel frame structure and down channel frame structure between the station of face realizes communication, it is also possible to according to different business
The ground satellite station of demand, can realize channeling by ascending control channel and down control channel, enter
And reach higher throughput of system.
It should be noted that：Down control channel adopts different frequencies or carrier wave, down channel complete frames knot
(Orthogonal Frequency Division Multiple Access, orthogonal frequency are more based on OFDMA for structure
Location) design, according to OFDM (Orthogonal Frequency Division between multiple carrier waves
Multiplexing, orthogonal frequency division multiplexi) dense arrangement, whole available frequency band is expanded on frequency domain,
The time can be determined as a frame using per section in time, specifically per determination time can be according to demand
Set, if the length of described per determination time is 10ms.
Further, above-mentioned common broadcast channel is made up of several OFDM subcarriers, in frequency, these
Subcarrier can concentrate on continuous subcarrier, also be dispersed in whole frequency range；The common broadcast channel is not adopted
With the beam shaping for user, but for the beam shaping in coverage；In all overlay areas
Earth station user can receive the common broadcast channel of enough power；
Downlink dedicated control channel can also be made up of one or more subcarrier, and wherein control signal is directed to
Each user carries out beam shaping；Multiple users can be multiplexed the beam shaping of a subcarrier, can be multiple
Same subcarrier is multiplexed between user.
16th embodiment
As shown in figure 8, the adjusting apparatus of the antenna, are applied to low-orbit satellite, including：
Second acquisition module 41, for obtaining the first position of the first earth station；
Second processing module 42, for obtaining the position of the current location and the first position of low-orbit satellite
Put relation；
Second adjusting module 43, for according to the position relationship, adjusting the second of the low-orbit satellite
Phased array antenna, so that the wave beam of second phased array antenna points to described first in default angular range
The first position of earth station, wherein the motion that the current location is located for low-orbit satellite described in current time
Orbital position.
In the embodiment of the present invention, as the tracks position that each time low-orbit satellite is located is different, lead to
The first position that the second acquisition module 41 obtains the first earth station is crossed, and then according to Second processing module 42
The position relationship of the real-time current location of low-orbit satellite and the first earth station, most after the second adjusting modules of Jing
The wave beam of the second phased array antenna of 43 adjustment low-orbit satellites, points to low orbit in default angular range
The current location of satellite, the so change according to the time, it is ensured that the wave beam of low-orbit satellite points to all the time
One earth station, improves uplink antenna gain and down aerial gain, realizes communication.
It should be noted that the device that the present invention is provided is the device of the method for adjustment of antenna, then above-mentioned antenna
All embodiments of method of adjustment are applied to the device, and can reach same or analogous beneficial effect.
17th embodiment
The adjusting apparatus of the antenna, can include：
Second acquisition submodule, for the first position of first earth station is obtained by ascending control channel,
Wherein, the ascending control channel includes the special access channel and shared control channel of first earth station,
Wherein described shared control channel includes at least one first subcarriers, and the special access channel is included at least
One the second subcarrier, wherein first subcarrier carries the Stochastic accessing or up of first earth station
Control signaling；
Second processing module, the position for obtaining the current location and the first position of low-orbit satellite are closed
System；
Second adjusting module, for according to the position relationship, adjust the low-orbit satellite second is phased
Array antenna, so that the wave beam of second phased array antenna points to first ground in default angular range
The first position stood, wherein the tracks that the current location is located for low-orbit satellite described in current time
Position.
In the embodiment of the present invention, by the first position of the first earth station of ascending control channel reception, and due to
The presence of ascending control channel and down control channel, low-orbit satellite service multiple earth stations (its number simultaneously
Measure the beam shaping quantity of the phased array antenna far more than low-orbit satellite), satellite and ground can be solved
Stand power limited, the problem that algorithm is simple and antenna amount and beam shaping of phased antenna are limited.
Due to comparing with the low-orbit satellite speed of service, the train of ground object, steamer, the speed of aircraft is very
It is low, geo-stationary is can be regarded as substantially, below assumes that low-orbit satellite earth station is resting state.
Therefore the effectiveness of the embodiment of the present invention is not affected.
18th embodiment
The adjusting apparatus of the antenna, can include：
Second acquisition unit, for by the ascending control channel, obtaining the up of first earth station
Signal；
3rd acquiring unit, for parsing the upward signal, determines the first position of first earth station；
Second processing module, the position for obtaining the current location and the first position of low-orbit satellite are closed
System；
Second adjusting module, for according to the position relationship, adjust the low-orbit satellite second is phased
Array antenna, so that the wave beam of second phased array antenna points to first ground in default angular range
The first position stood, wherein the tracks that the current location is located for low-orbit satellite described in current time
Position.
In the embodiment of the present invention, the first position of the first earth station is received by ascending control channel, due to upper
Upward signal in row control channel carries the first position of the first earth station, then through low-orbit satellite solution
Analysis obtains specific first position, so not only can improve antenna gain by beam shaping, realizes single
Efficient communication between individual low-orbit satellite and the first earth station, and low-orbit satellite is while service multiplely
Face station (beam shaping quantity of its quantity far more than the phased array antenna of low-orbit satellite), it is also possible to solve
Certainly satellite and earth station's power limited, algorithm is simple and antenna amount and beam shaping of phased antenna be limited
Problem.
19th embodiment
The adjusting apparatus of the antenna, can include：
Second acquisition module, for obtaining the first position of the first earth station；
Second processing submodule, for obtaining the first position of first earth station, and according to the low rail
The tracks information of road satellite, the current time and the first position, wherein tracks letter
Breath includes orbital tracking；
3rd processes submodule, for obtaining the current location of current time described in the low-orbit satellite, root
According to the angle of the current location and the first position of first earth station；
Second adjustment submodule, for according to the angle, the second phased array day to the low-orbit satellite
Line carries out phase modulation.
Above-mentioned steps 21 into step 23, by the orbital tracking of the tracks information of low-orbit satellite and
The first position of the first earth station, determines low-orbit satellite current location with the first position of the first earth station
Angle, and then phase modulation is carried out to the second phased array antenna of low-orbit satellite according to angle, so by wave beam
Shaping can improve antenna gain, realize the efficient communication between single low-orbit satellite and the first earth station.
20th embodiment
The adjusting apparatus of the antenna, can include：
Second acquisition submodule, for the first position of first earth station is obtained by ascending control channel,
Wherein, the ascending control channel includes the special access channel and shared control channel of first earth station,
Wherein described shared control channel includes at least one first subcarriers, and the special access channel is included at least
One the second subcarrier, wherein first subcarrier carries the Stochastic accessing or up of first earth station
Control signaling；
Second processing submodule, for obtaining the first position of first earth station, and according to the low rail
The tracks information of road satellite, the current time and the first position, wherein tracks letter
Breath includes orbital tracking；
3rd processes submodule, for obtaining the current location of current time described in the low-orbit satellite, root
According to the angle of the current location and the first position of first earth station；
Second adjustment submodule, according to the angle, enters to the second phased array antenna of the low-orbit satellite
Row phase modulation.
In the embodiment of the present invention, by the first position of the first earth station of ascending control channel reception, and due to
The presence of ascending control channel and down control channel, low-orbit satellite service multiple earth stations (its number simultaneously
Measure the beam shaping quantity of the phased array antenna far more than low-orbit satellite), and according to angle to low orbit
Second phased array antenna of satellite carries out phase modulation, so can improve antenna gain by beam shaping, real
Existing efficient communication between single low-orbit satellite and the first earth station, it is also possible to solve satellite and earth station's work(
Rate is limited, the problem that algorithm is simple and antenna amount and beam shaping of phased antenna are limited.
21st embodiment
The adjusting apparatus of the antenna, can include：
Second acquisition unit, for by the ascending control channel, obtaining the up of first earth station
Signal；
3rd acquiring unit, for parsing the upward signal, determines the first position of first earth station；
Second processing submodule, for obtaining the first position of first earth station, and according to the low rail
The tracks information of road satellite, the current time and the first position, wherein tracks letter
Breath includes orbital tracking；
3rd processes submodule, for obtaining the current location of current time described in the low-orbit satellite, root
According to the angle of the current location and the first position of first earth station；
Second adjustment submodule, for according to the angle, the second phased array day to the low-orbit satellite
Line carries out phase modulation.
In the embodiment of the present invention, the first position of the first earth station is received by ascending control channel, due to upper
Upward signal in row control channel carries the first position of the first earth station, then through low-orbit satellite solution
Analysis obtains specific first position, so can improve antenna gain by beam shaping, realize single low
Efficient communication between orbiter and the first earth station, it is also possible to solve satellite and earth station's power limited,
The problem that algorithm is simple and antenna amount and beam shaping of phased antenna are limited.
22nd embodiment
The adjusting apparatus of the antenna, can include：
3rd acquisition module, for obtaining the resource allocation request of the second earth station；Wherein described second ground
Stand the earth station being allocated is needed for any；
Judge module, for according to the resource allocation request, judging whether unappropriated descending control
The subcarrier of channel processed, wherein, the down control channel includes downlink dedicated control channel and public broadcasting
Channel, wherein the common broadcast channel includes at least one orthogonal frequency division multiplex OFDM subcarrier, institute
Stating downlink dedicated control channel includes at least one the 3rd subcarriers, and the common broadcast channel is for described
In the beam coverage area of low-orbit satellite, all earth stations carry out beam shaping；
First distribute module, if for existing, by the subcarrier of the unappropriated down control channel
Distribute to the second earth station；
Second distribute module, if for not existing, it is determined that the bearing capacity of current all subcarriers is minimum at least
One subcarrier, and a subcarrier at least one minimum subcarrier of the bearing capacity is distributed to full
Second earth station of sufficient prerequisite, wherein the prerequisite is second earth station and first ground
The distance between face station is more than predeterminable range.
In the embodiment of the present invention, the second earth station is distributed to by the subcarrier that would sit idle for or bearing capacity is less,
So can to different earth stations realize in subcarrier multiplexing, be capable of achieving higher uplink transmission rate and
Downlink transmission rate, when low-orbit satellite services multiple earth stations, also using low-orbit satellite and ground simultaneously
Up-downgoing channel frame structure between standing, is multiplexed in subcarrier to different users, realizes communication.
23rd embodiment
The earth station, including：The adjusting apparatus of antenna described above.
The adjusting apparatus of the corresponding antenna due to the embodiment of the present invention, are applied to earth station, therefore, this
Bright embodiment additionally provides a kind of earth station, wherein, the described of the adjusting apparatus of above-mentioned antenna realizes embodiment
Suitable for the embodiment of the earth station, identical technique effect can be also reached.
24th embodiment
The low-orbit satellite, including：The adjusting apparatus of antenna described above.
The adjusting apparatus of the corresponding antenna due to the embodiment of the present invention, are applied to low-orbit satellite, therefore,
The embodiment of the present invention additionally provides a kind of low-orbit satellite, wherein, the reality of the adjusting apparatus of above-mentioned antenna
Current embodiment can reach identical technique effect suitable for the embodiment of the low-orbit satellite, also.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from principle of the present invention, some improvements and modifications can also be made,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (16)
1. a kind of method of adjustment of antenna, it is characterised in that include：
The current location of low-orbit satellite is obtained, wherein the current location is defended for low orbit described in current time
The tracks position that star is located；
Obtain the position relationship of the current location and the first position of the first earth station；
According to the position relationship, the first phased array antenna of first earth station is adjusted, so that described the
The wave beam of one phased array antenna points to the current location of the low-orbit satellite in default angular range.
2. the method for adjustment of antenna according to claim 1, it is characterised in that also include：
By ascending control channel, the first position of first earth station is sent to the low-orbit satellite,
Wherein, the ascending control channel includes the special access channel and shared control channel of first earth station,
Wherein described shared control channel includes at least one first subcarriers, and the special access channel is included at least
One the second subcarrier, wherein first subcarrier carries the Stochastic accessing or up of first earth station
Control signaling.
3. the method for adjustment of antenna according to claim 1 and 2, it is characterised in that the acquisition
The current location of low-orbit satellite, including：
The tracks information and current time of the low-orbit satellite are obtained, wherein the tracks information
Including orbital tracking；
Obtain the first position of first earth station, and according to the tracks information, it is described current when
Between and the first position, determine the current location of the low-orbit satellite.
4. the method for adjustment of antenna according to claim 3, it is characterised in that described in the acquisition
The position relationship of the first position of current location and the first earth station, including：
According to the current location of the current time low-orbit satellite, determine the current location with described first
The angle of the first position of earth station.
5. the method for adjustment of antenna according to claim 4, it is characterised in that described in the basis
Position relationship adjusts the first phased array antenna of first earth station, including：
According to the angle, phase modulation is carried out to the first phased array antenna of first earth station.
6. the method for adjustment of antenna according to claim 3, it is characterised in that described in the acquisition
The tracks information of low-orbit satellite and current time, including：
By down control channel, the fortune broadcasted to first earth station from the low-orbit satellite is obtained
Dynamic orbit information, wherein, the down control channel includes downlink dedicated control channel and common broadcast channel,
Wherein described common broadcast channel includes at least one orthogonal frequency division multiplex OFDM subcarrier, described descending
DCCH includes at least one the 3rd subcarriers, and the common broadcast channel is for the low orbit
In the beam coverage area of satellite, all earth stations carry out beam shaping.
7. a kind of method of adjustment of antenna, it is characterised in that include：
Obtain the first position of the first earth station；
Obtain the position relationship of the current location and the first position of low-orbit satellite；
According to the position relationship, the second phased array antenna of the low-orbit satellite is adjusted, so that described the
The wave beam of two phased array antenna points to the first position of first earth station in default angular range, wherein
The tracks position that the current location is located for low-orbit satellite described in current time.
8. the method for adjustment of antenna according to claim 7, it is characterised in that the acquisition first
The first position of earth station, including：
The first position of first earth station is obtained by ascending control channel, wherein, the upload control
Channel includes the special access channel and shared control channel of first earth station, wherein the shared control
Channel includes at least one first subcarriers, and the special access channel includes at least one second subcarriers,
Wherein described first subcarrier carries the Stochastic accessing or upstream control signaling of first earth station.
9. the method for adjustment of antenna according to claim 8, it is characterised in that described by up
Control channel obtains the first position of the first earth station, including：
By the ascending control channel, the upward signal of first earth station is obtained；
The upward signal is parsed, the first position of first earth station is determined.
10. the method for adjustment of the antenna according to any one of claim 7 to 9, it is characterised in that institute
The position relationship of the current location and the first position that obtain low-orbit satellite is stated, including：
Obtain the first position of first earth station, and the tracks information according to the low-orbit satellite,
The current time and the first position, wherein the tracks information includes orbital tracking；
Obtain the current location of current time described in the low-orbit satellite, according to the current location with it is described
The angle of the first position of the first earth station.
The method of adjustment of 11. antennas according to claim 10, it is characterised in that described according to institute
Position relationship is stated, the second phased array antenna of the low-orbit satellite is adjusted, including：
According to the angle, phase modulation is carried out to the second phased array antenna of the low-orbit satellite.
The method of adjustment of 12. antennas according to any one of claim 7 to 9, it is characterised in that also
Including：
Obtain the resource allocation request of the second earth station；
According to the resource allocation request, the subcarrier of unappropriated down control channel is judged whether,
Wherein, the down control channel includes downlink dedicated control channel and common broadcast channel, wherein the public affairs
Broadcast channel includes at least one orthogonal frequency division multiplex OFDM subcarrier, the downlink dedicated control letter altogether
Road includes at least one the 3rd subcarriers, and the common broadcast channel is the wave beam for the low-orbit satellite
In overlay area, all earth stations carry out beam shaping；
If existing, the subcarrier of the unappropriated down control channel is distributed to into the second earth station；
If not existing, it is determined that at least one minimum subcarrier of the bearing capacity of current all subcarriers, and by institute
State a subcarrier at least one minimum subcarrier of bearing capacity and distribute to and meet the second of prerequisite
Earth station, wherein the prerequisite is that second earth station is big with the distance between first earth station
In predeterminable range.
A kind of 13. adjusting apparatus of antenna, are applied to earth station, it is characterised in that the adjustment of the antenna
Device includes：
First acquisition module, for obtaining the current location of low-orbit satellite, wherein the current location is to work as
The tracks position that low-orbit satellite described in the front time is located；
First processing module, for obtaining the position pass of the current location and the first position of the first earth station
System；
First adjusting module, for according to the position relationship, adjust first earth station first is phased
Array antenna, so as to the wave beam of first phased array antenna points to the low orbit in default angular range defend
The current location of star.
A kind of 14. adjusting apparatus of antenna, are applied to low-orbit satellite, it is characterised in that the antenna
Adjusting apparatus include：
Second acquisition module, for obtaining the first position of the first earth station；
Second processing module, the position for obtaining the current location and the first position of low-orbit satellite are closed
System；
Second adjusting module, for according to the position relationship, adjust the low-orbit satellite second is phased
Array antenna, so that the wave beam of second phased array antenna points to first ground in default angular range
The first position stood, wherein the tracks that the current location is located for low-orbit satellite described in current time
Position.
15. a kind of earth stations, it is characterised in that include：The adjustment of antenna as claimed in claim 13
Device.
16. a kind of low-orbit satellites, it is characterised in that include：Antenna as claimed in claim 14
Adjusting apparatus.
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