JPH1152039A - Satellite searching position transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a transmitter for searching a satellite returning back to the earth from the space for a long time. SOLUTION: The satellite searching position transmitter comprises a section 8 for calculating its own position based on GPS signals 4 received from GPS satellites, and a section 9 for storing digital topographic information in the vicinity of the returning point of satellite. The transmitter determines the zone where the returning point of satellite is present based on its own position thus calculated and the information on a digital map. Furthermore, a supply power mode is set at a supply power mode setting section 9 depending on the residual quantity, the temperature, and the like a power supply battery 13 for a beacon signal transmitter 11 detected by a residual quantity sensor 14, a temperature sensor 15, and the like. Finally, the duration and the interval of radio wave transmission per unit rime from the beacon signal transmitter 11 are controlled depending on the supply power mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a satellite operated by a battery which transmits the current position of an artificial satellite returning to the earth, such as a re-entry vehicle from space, to the search base or the like as a notification radio wave. The present invention relates to a position transmitting device.

[0002]

2. Description of the Related Art Conventionally, a search for a satellite that re-enters the earth from space and returns to the earth is performed by determining a re-entry plan procedure based on the orbit of the satellite in flight in orbit and a target return point, and re-entering in accordance with the procedure. A parachute is opened near the target return point, and a ship or the like is made to stand by near the target return point to search for and retrieve a satellite.

[0003]

As described above, with the conventional apparatus, it was not possible to accurately determine the exact position of the return point of the artificial satellite to the earth. Therefore, the search and rescue system (Yahei Fujii, "Electronic Navigation"
1. Issued by the Japan Traffic Research Association on March 18, 1995, p1
As described in 77-182), after landing or landing, the artificial satellite transmits an identification code by a built-in beacon signal transmitter and automatically transmits a radar response radio wave to a radar search radio wave transmitted from a search base. Further, as in the case of the distress rescue system disclosed in JP-A-5-203720, the position of the return point obtained from the built-in GPS receiver and the identification code are transmitted by the built-in beacon signal transmitter, and these signals are transmitted to the search base. It was conceived to receive and search for this. However, since the power supply battery for the beacon signal transmitter has a limited capacity, a search must be performed within a short time before the battery is exhausted.

The present invention makes it possible to search for an artificial satellite that has re-entered the earth from space and returned to the earth for a long time. Therefore, the artificial satellite itself detects the position, and the position, the remaining amount of the power battery, From the power battery to the beacon signal transmitter by judging the reachability of the radio wave depending on the temperature of the power battery and controlling the period per unit time of radio wave transmission, transmission interval and transmission power of the beacon signal transmitter The purpose of the present invention is to optimally control the supply power of the data and to extend the possible transmission time as much as possible.

[0005]

The satellite search position transmitting device according to the first invention is a plurality of positioning satellites orbiting the earth for measuring the position of the return point of the satellite.
PS (Global Positioning System)
em) a position calculating unit that calculates its own position from a GPS signal from a satellite, a digital map storage unit in which terrain information near the return point is stored as digital information, and its own position calculated by the position calculating unit. A supply power mode determining unit for calculating the range of the return point of the artificial satellite from the information of the digital map and calculating a supply power mode corresponding to the range information; and a unit time of radio wave transmission of the beacon signal transmitter per unit time. By having a power management control circuit for controlling a period, a transmission interval, a transmission power, and the like, power consumption of a power supply battery is saved, and a transmission available time is made as long as possible.

A satellite search position transmitting device according to a second aspect of the present invention has a power supply battery remaining amount sensor and a power supply battery temperature sensor, and the supply power mode determining unit receives the power supply battery remaining amount sensor from the power supply battery remaining amount sensor. The remaining battery capacity of the power battery is determined from the remaining battery power and the battery temperature from the temperature sensor of the power battery,
By determining the power supply mode of the power supply battery to the beacon transmitter that further saves the power consumption of the power supply battery in the above power supply mode, the capacity of the power supply battery is further reduced and the transmittable time is lengthened.

A satellite search position transmitting device according to a third aspect of the present invention transmits the beacon signal from the power supply battery remaining amount sensor and the battery temperature from a power supply battery temperature sensor together with the satellite position information. By transmitting a beacon signal as a notification radio wave from the aircraft, the search base calculates the remaining battery capacity from the current battery remaining amount and battery temperature of the satellite indicated in the received beacon signal, and how long It is possible to know if it is necessary to find an artificial satellite.

Further, in the satellite search position transmitting device according to a fourth aspect of the present invention, the supply power mode determining unit detects a temporal change in the position of the artificial satellite calculated by the position calculating unit, and the change is a reference value. If it is determined that the battery power is below (small), the time interval for transmission to the search base is extended to set the power supply mode so that the battery can be further saved. In this case, the variation in the position of the landing or landing point of the satellite is very small, so even if the interval between the notification radio waves is lengthened, the search base can perform a search using the position once received by the notification radio wave as a clue. It is possible.

A satellite search position transmitting device according to a fifth aspect of the present invention receives a GPS signal transmitted from a plurality of positioning satellites, orbiting satellites orbiting the earth, to measure the position of a return point of the satellite. Antenna and GP received
A position calculating unit that calculates its own position from the S signal, a beacon signal transmitter that transmits the calculated position of the artificial satellite to the artificial satellite search station as a notification radio wave, and power supplied to the electronic devices constituting the artificial satellite search position transmitting device A power supply battery to be supplied, a solar battery that generates current in response to sunlight, a remaining amount sensor of the power supply battery, and a charge control circuit that charges the power supply battery with the current generated by the solar battery and shunts excess current to the shunt circuit for charging. By providing a shunt circuit that consumes excess current, the capacity of the power supply battery is maintained, thereby increasing the transmission time of the beacon signal.

A satellite search position transmitting device according to a sixth aspect of the present invention has a beacon signal transmission control unit, and when the power supply battery is not sufficiently charged, the intensity of the radio wave transmitted by the beacon signal transmitter is reduced and transmitted. By controlling the transmission of the beacon signal transmitter in the beacon signal transmission mode in which the transmission time interval is lengthened and the transmission time interval is lengthened, the power consumption of the power battery is saved, and the transmission time of the beacon signal is extended as much as possible. .

Further, in the satellite search position transmitting device according to a seventh aspect of the present invention, the beacon signal transmission control unit detects a temporal change in the position of the artificial satellite calculated by the position calculation unit, and the change is small. If it is determined that there is
By controlling the transmission of the beacon signal transmitter in the beacon signal transmission mode in which the time interval for transmitting to the search base is further lengthened, power consumption of the power battery is saved, and the transmission time of the beacon signal is extended as much as possible. . In this case, the variation in the position of the landing or landing point of the satellite is very small, so even if the interval between the notification radio waves is lengthened, the search base can perform a search using the position once received by the notification radio wave as a clue. It is possible.

The satellite search position transmitting device according to an eighth aspect of the present invention provides a beacon signal as a notification radio wave from the beacon signal transmitter together with the satellite remaining position information from the battery remaining amount sensor from the power supply battery remaining amount sensor. send. At the search base, it is possible to know how long the satellite has to be searched for from the current battery level of the satellite indicated in the received beacon signal.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a diagram for explaining how an artificial satellite equipped with the artificial satellite search position transmitting device according to the first embodiment of the present invention reenters from space, returns to the earth, and is searched. In the figure, reference numeral 1 denotes an artificial satellite which has reentered from space and returned to the earth, 2 denotes an artificial satellite search position transmitting device according to the present invention, 3 denotes a GPS satellite which transmits a GPS signal, 4
Denotes a GPS signal, 5 denotes a notification radio wave, and 6 denotes a satellite search base such as a search ship or a search aircraft. The artificial satellite 1 that has re-entered the universe and returned to the earth automatically turns on the power of the artificial satellite search position transmitting device 2. The satellite search position transmitting device 2 receives the GPS signal 4 from the GPS satellite 3,
The calculated position, the remaining amount of the power supply battery, and the temperature are transmitted to a satellite search base 6 such as a search ship or a search aircraft as a notification radio wave 5 for satellite search. The artificial satellite search base 6 receives the notification radio wave 5, searches the artificial satellite 1 using the information of the notification radio wave 5 as a clue, and collects the artificial satellite 1.

FIG. 2 is a block diagram showing the configuration of the artificial satellite search position transmitting device 2 mounted on the artificial satellite 1 of FIG. In the figure, 7 is a GPS signal receiving antenna, 8 is a position calculator,
9 is a power supply mode determining unit, 10 is a digital map storage unit, 11 is a beacon signal transmitter, 12 is a beacon signal transmitting antenna, 13 is a beacon transmitter power battery, 14
Is a power battery remaining amount sensor, 15 is a power battery temperature sensor, 16 is power supplied to a beacon signal transmitter, and 17 is a power management control circuit.

The GPS signal 4 is received by the GPS signal receiving antenna 7, and the position calculating section 8 calculates the position of the GPS signal receiving antenna 7 from the received GPS signal 4. GP
The position of the S signal receiving antenna 7 is set as the representative point of the artificial satellite 1 and the position of the artificial satellite 1. Supply power mode determination unit 9
Is the power of the power 16 supplied from the power supply battery 13 to the beacon signal transmitter 11 by determining which area of the digital map read from the digital map storage 10 the position of the artificial satellite 1 input from the position calculator 8 is located. Determine the mode. The power management control circuit 17 includes the power supply mode determining unit 9.
The power supplied to the beacon signal transmitter 11 is controlled by controlling the intensity, transmission time, and transmission interval of the radio wave transmitted from the beacon signal transmitter 11 corresponding to the set power supply mode. The beacon signal transmitter 11 transmits the position of the artificial satellite 1 input from the position calculator 8 with the controlled power as the notification radio wave 5.

FIG. 3 shows that the current position of the artificial satellite calculated from the information stored in the digital map and the GPS signal is located within a range near the scheduled return point of the artificial satellite, and the power supply mode is determined. It is a figure for explaining. In the figure, 18 is a scheduled return point of the artificial satellite, 19 is an area indicating the power supply mode, and 20 is a return point of the artificial satellite. FIG. 4 is a diagram for explaining the power supply mode. In the figure, 21 is the intensity of the radio wave transmitted from the beacon signal transmitter 11, 22 is the transmission time, and 23 is the transmission interval.

The power supply mode set by the power supply mode determination unit 9 based on the return point position of the satellite and the information stored in the digital map will be described with reference to FIGS. The digital map stored in the digital map storage unit 10 is, for example, the one shown in FIG. 3 and is located near the scheduled return point 18 of the artificial satellite 1 returning from space to the earth.
The power supply mode determining unit 9 prescribes a power supply mode area 19 indicated by two areas. The power supply mode determining unit 9 determines which mode area 19 in the digital map the artificial satellite position input from the position calculator 8 has returned. Determine. For example, FIG.
Then, it is determined as the second from the inside, and the corresponding power supply mode is set. The power supply mode is, for example, as shown in FIG.
The intensity of the radio wave transmitted from the beacon signal transmitter 11 is represented by the intensity 20, the transmission time 21, and the transmission interval 22. In the innermost area near the scheduled return point in FIG. , The transmission time 21 is shortened, the transmission interval 22
, And in the area outside the expected return point, the radio wave intensity 20 is increased, the transmission time 21 is lengthened, and the transmission interval 22 is shortened to adjust the search radio wave to the search base.

In FIG. 2, a power supply battery remaining amount sensor 14 attached to a power supply battery 13 and a power supply battery temperature sensor 1
The power supply mode determining unit 9 determines the remaining battery capacity of the power supply battery from the remaining amount of the power supply battery and the temperature of the power supply battery, which are the information of No. 5, and when the remaining battery capacity is small, the supply power mode determined from the digital map. On the other hand, by increasing the transmission interval 22 in FIG. 3 so as to further save power, it is possible to extend the transmittable time.

In FIG. 2, a power supply battery remaining amount sensor 14 attached to a power supply battery 13 and a power supply battery temperature sensor 1
The remaining information of the power supply battery 13 and the temperature of the power supply battery, which are the information of No. 5, are input to the beacon signal transmitter 11, and the beacon signal transmitter 11 transmits the notification telegram 5 together with the satellite position input from the position calculator 8. . In FIG. 1, the artificial satellite search base 6 can calculate the remaining battery capacity from the current remaining amount and the temperature of the power supply battery 13 indicated in the received notification radio wave 5, so that the artificial You can know if you have to find a satellite.

FIG. 5 is a graph for explaining a case where the amount of movement of the artificial satellite is smaller than or equal to the reference value (small) based on a temporal change in the position of the artificial satellite input from the position calculator 7 to the power supply mode determiner 8 in FIG. It is. In the figure, * indicates a position at a certain time, 24 indicates a temporal change of the artificial satellite position plotted on a time axis, and 25 indicates a minute range of artificial satellite position fluctuation. Supply power mode determination unit 9 in FIG.
Detects a temporal change 24 in the satellite position input from the position calculator 8 and, when it is determined that the change is within the minute range 25 of the satellite position change, so as to further save power, By making the transmission interval 22 in FIG. 3 longer, the transmittable time can be further extended.

Embodiment 2 FIG. FIG. 6 shows a second embodiment of the satellite search position transmitting device 2 mounted on the artificial satellite 1 of FIG.
FIG. 3 is a configuration block diagram illustrating In the figure, 7 is a GPS signal receiving antenna, 8 is a position calculating unit, 11 is a beacon signal transmitter, 12 is a beacon signal transmitting antenna, 13 is a power supply battery, 14 is a remaining battery power sensor, and 26 is a solar battery. ,
27 is a charge control circuit, 28 is a shunt circuit, and 29 is a beacon signal transmission control unit. In the figure, a solid line inside the artificial satellite search position transmitting device 2 indicates a power line, and a dotted line indicates a signal line. Also, a power supply line from the power supply battery 13 to the electronic device is omitted.

The GPS signal 4 is received by the GPS signal receiving antenna 7, and the position calculator 8 calculates the position of the GPS signal receiving antenna 7 from the received GPS signal 4. GP
The position of the S signal receiving antenna 7 is set as the representative point of the artificial satellite 1 and the position of the artificial satellite 1, and the beacon signal transmitter 11 uses the position of the artificial satellite 1 input from the position calculating unit 8 to transmit the beacon signal transmitting antenna 12. Is transmitted as the notification radio wave 5 from.

On the other hand, the charge control circuit 27 determines the capacity of the power supply battery 13 from the output of the power supply battery residual quantity sensor 14,
When the power supply battery 13 can be charged, the current generated by the solar battery 26 is supplied to the power supply battery 13 to be charged, and it is determined from the output of the power supply remaining amount sensor 14 that the power supply battery 13 is fully charged. In this case, the generated current is
Then, the excess current is consumed by the shunt circuit 28 to maintain the capacity of the power supply battery and prolong the transmission time of the beacon signal.

The beacon signal transmission control section 29 determines that the power supply battery 13 is not sufficiently charged when the output of the power supply battery remaining amount sensor 14 is equal to or less than a preset remaining amount warning value, and transmits a beacon signal. By controlling the transmission of the beacon signal transmitter 11 in the beacon signal transmission mode in which the radio wave intensity of the transmitter 11 is reduced, the transmission period is shortened, and the transmission interval is lengthened, the power consumption of the power battery 13 is reduced, and the beacon signal is transmitted. Make the transmission time of as long as possible.

Further, the beacon signal transmission control unit 29
The time change of the position of the artificial satellite 1 calculated by the position calculating unit 8 is detected, and when it is determined that the change is minute, the beacon signal for extending the time interval to be transmitted to the artificial satellite search base 6 in FIG. By controlling the transmission of the beacon signal transmitter 11 in the transmission mode, the power consumption of the power supply battery 13 is saved, and the possible transmission time of the beacon signal is made as long as possible.

On the other hand, the beacon signal transmitter 11 outputs the output of the remaining battery power sensor 14 together with the position of the artificial satellite 1 inputted from the position calculator 8 to the beacon signal transmitting antenna 1.
A transmission is made from 2 as a notification radio wave 5. The satellite search base 6 in FIG. 1 can know how long the satellite 1 has to be searched for from the current remaining battery level of the satellite 1 indicated in the received beacon signal. it can.

FIG. 7 is a diagram for explaining the operation of charging the power supply battery 13 according to the change in the output of the remaining amount sensor 14 of the power supply battery. In the drawing, 21 is a full charge value, 18 is a full charge reaching point m, and Y is The remaining amount warning value t indicates a reaching point of the remaining amount warning value.

The charge control circuit 27 charges the current generated by the solar cell 26 to the power supply battery 13 up to a full charge reaching point m at which the full charge value 21 is reached. When the charging is completed, the charging control circuit 27 allows the surplus current to flow to the shunt circuit 28 and repeats charging and shunting to the shunt circuit 28 so as to maintain the full charge value, thereby maintaining the capacity of the power supply battery 13,
Extend the transmission time of the beacon signal.

While the remaining amount of the power supply battery 13 holds the full charge value 21 shown in FIG. 7, the beacon signal transmission control unit 29 sets the beacon signal transmission mode as shown in FIG. A mode radio wave intensity 21, a transmission time 22, and a transmission interval 23 are set, and the beacon signal transmitter 11 transmits a beacon signal in accordance therewith. However, depending on the state of landing or landing of the satellite which has re-entered and returned from space to the earth, the solar cell 26 with respect to the sun
When a current sufficient for charging is not generated in the direction of, or when no current is generated from the solar battery 26 at night or in bad weather, the capacity of the power supply battery 13 decreases. For this purpose, the remaining amount warning value T shown in FIG.
In the case where the remaining amount of the radio wave 3 becomes equal to or less than that, the beacon signal transmission control unit 29 sets the beacon signal transmission mode to the radio wave intensity 2
1 is set to be small, the transmission time 22 is set short, and the transmission interval 23 is set long. Can be reduced, and the transmission possible time can be extended.

FIG. 5 is a graph for explaining the case where the amount of movement of the satellite is small based on the temporal change in the position of the satellite input to the beacon signal transmission controller 29 from the position calculator 7 in FIG. In the figure, an asterisk (*) indicates a position at a certain time, 24 is a temporal change of the artificial satellite position plotted on the time axis, and 25 is a minute range of artificial satellite position fluctuation. The beacon signal transmission control unit 29 in FIG.
4 is detected, and the change is detected as a small range 25
When it is determined that the power supply battery 13 is within the range, the power consumption of the power supply battery 13 is reduced by transmitting a beacon signal in the beacon signal transmission mode in which the transmission interval 23 in FIG. It is possible to reduce the transmission time and extend the transmission possible time.

In FIG. 6, the remaining battery power sensor 14 attached to the power battery 13 is input to the beacon signal transmitter 11, and the beacon signal transmitter 11 transmits the notification radio wave together with the satellite position input from the position calculator 8. Send as 5 In the artificial satellite search base 6 in FIG. 1, the current remaining battery capacity of the power supply battery 13 indicated in the received notification radio wave 5 can be known, so how long should the artificial satellite be searched for? You can know.

[0032]

According to the first aspect of the present invention, the artificial satellite returning from space to the earth calculates its own position using the GPS signal sent from the GPS satellite, and displays the digital map near the scheduled return point. It is stored in advance to determine the range of the calculated return position of the satellite on the digital map, and the intensity of the radio wave transmitted by the beacon signal transmitter, the transmission time,
By controlling the transmission interval, power can be supplied from the power supply battery to the beacon transmitter without waste, enabling long-time radio wave transmission.Therefore, there is much more margin in the time limit for searching the satellite from the search base than before. There is an effect that can be made.

According to the second invention, the artificial satellite that has returned to space from space calculates the current remaining battery capacity from the remaining power and temperature of the power supply battery, and further considers the remaining battery capacity, and further considers the remaining beacon signal transmitter. By controlling the intensity of the transmission radio wave, the transmission time, and the transmission interval, power can be supplied more effectively, so that there is an effect that radio transmission can be performed for a longer time.

According to the third aspect of the present invention, the remaining amount and the temperature of the power supply battery are notified to the search base by the notification radio wave, so that the search base has the remaining battery of the current power supply battery of the satellite returned from space to the earth. By calculating the capacity, it is possible to know the transmittable time of the notification radio wave from the artificial satellite, and thus it is possible to know how long the artificial satellite must be searched within.

According to the fourth invention, the artificial satellite that has returned to the earth from space detects a temporal change in the calculated return position of itself, and determines that the change is equal to or smaller than the reference value (small). In this case, the power can be more effectively supplied by performing control to extend the transmission interval from the beacon signal transmitter, so that it is possible to transmit radio waves for a longer time.

According to the fifth aspect, the artificial satellite that has returned from space to the earth can maintain the capacity of the power supply battery by charging the power supply battery with the current generated by the attached solar cell, and can maintain the capacity of the search base. Since the transmission time of the beacon signal can be lengthened, there is an effect that the time required to search for the artificial satellite from the search base can be made much longer than before.

According to the sixth aspect of the present invention, the artificial satellite returning from the universe to the earth controls the intensity, transmission time, and transmission interval of the radio wave transmitted by the beacon signal transmitter in consideration of the remaining amount of the power battery. Since electric power can be supplied effectively, there is an effect that radio wave transmission for a long time becomes possible.

According to the seventh aspect, the artificial satellite that has returned from space to the earth detects a temporal change in the calculated return position of its own, and if it determines that the change is minute, it transmits a beacon signal. Since power can be effectively supplied by performing control to extend the transmission interval from the transmitter, there is an effect that long-term radio wave transmission is possible.

According to the eighth invention, the remaining amount of the power supply battery is reported to the search base by the notification radio wave, so that the search base uses the remaining battery of the current power supply battery of the artificial satellite returned from space to the earth. It is possible to know the transmission time of the notification radio wave from the artificial satellite, and therefore, it is possible to know how long it is necessary to search for the artificial satellite.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an artificial satellite search according to a first embodiment of the artificial satellite search position transmitting device of the present invention.

FIG. 2 is a block diagram showing Embodiment 1 of the artificial satellite search position transmitting device of the present invention.

FIG. 3 is an example of a digital map according to the present invention.

FIG. 4 is a diagram illustrating a power supply mode according to the present invention.

FIG. 5 is a diagram for explaining a temporal change of a satellite position according to the present invention.

FIG. 6 is a block diagram showing a configuration of a second embodiment of the satellite search position transmitting device according to the present invention.

FIG. 7 is an example of a change in the remaining amount of the power supply battery used in the second embodiment of the satellite search position transmitting device according to the present invention.

[Explanation of symbols]

1 Artificial satellite, 2 Artificial satellite search position transmitting device, 3G
PS satellite, 4 GPS signal, 5 notification radio wave, 6 artificial satellite search base, 7 GPS signal receiving antenna, 8 position calculation unit, 9 supply power mode determination unit, 10 digital map storage unit, 11 beacon signal transmitter, 12 beacon Signal transmission antenna, 13 power battery, 14 power battery remaining amount sensor, 15 power battery temperature sensor, 16
Power supply to beacon signal transmitter, 17 power management control circuit, 18 scheduled return point for satellite, 19 supply power mode area, 20 satellite return point, 21 radio wave intensity, 22 transmission time, 23 transmission interval, 24 artificial Temporal change of satellite position, 25 minute range of satellite position fluctuation,
26 solar cell, 27 charge control circuit, 28 shunt circuit, 29 beacon signal control unit.

Claims (8)

[Claims] 1. A GPS (Global Position) mounted on a satellite that re-enters the Earth from space and returns.
Ning System) antenna, a position calculating unit that calculates the position of the artificial satellite from the GPS signal received from the GPS antenna, and the position of the artificial satellite calculated by the position calculating unit is transmitted as a notification radio wave to a search base such as a ship or an aircraft. A beacon signal transmitter for transmitting, a beacon signal transmitting antenna for transmitting the notification radio wave, a power supply battery for supplying power to the beacon signal transmitter, and a digital map storing a digital map near a scheduled return point A storage unit, and a power supply for discriminating which area of the digital map read from the digital map storage unit the position of the satellite input from the position calculation unit is used to save power consumption of a power battery to the beacon transmitter. A power supply mode determining unit for determining a mode, and transmitting from a beacon signal transmitter according to the power supply mode. And a power supply control circuit for controlling the power of the power supply battery by controlling the intensity, transmission time, and transmission interval of the radio wave. 2. A power supply battery mode sensor, comprising: a power supply battery remaining amount sensor; and a power supply battery temperature sensor, wherein the supply power mode determining unit determines the remaining battery amount from the power supply battery remaining amount sensor and the power supply battery temperature sensor. 2. The satellite search position transmitting apparatus according to claim 1, wherein a power supply mode of the power supply battery to the beacon transmitter for further reducing power consumption of the power supply battery is determined by determining a remaining battery capacity of the power supply battery from the battery temperature. 3. The beacon signal transmitter transmits the remaining battery level from the power supply battery residual quantity sensor and the battery temperature from the power supply battery temperature sensor together with the position of the satellite as a notification radio wave. 2. The satellite search position transmitting device according to 1. 4. The supply power mode determination unit detects a temporal change in the position of the artificial satellite input from the position calculation unit, determines whether the amount of change is equal to or less than a reference value, 2. The satellite search position transmitting device according to claim 1, wherein a power supply mode for limiting a time for turning on a power supply battery is set so as to save battery power. 5. A GPS (Global Position) mounted on a satellite which re-enters the earth from space and returns.
Ning System) antenna, a position calculator for calculating the position of the satellite from the GPS signal received from the GPS antenna, and transmitting the position of the satellite calculated by the position calculator to a search base such as a ship or an aircraft as a notification radio wave. Beacon signal transmitter, a beacon signal transmitting antenna for transmitting a notification radio wave, a power supply battery for supplying power to the constituent electronic devices, a solar cell for receiving current from the sun and generating current, and consuming excess current And a charging control circuit for charging the power supply battery with the solar cell generated current and shunting excess current to the shunt circuit. 6. A beacon signal transmission control unit for determining a beacon signal transmission mode for saving power consumption of the power supply battery when it is determined that the output of the remaining power sensor of the power supply battery is small and the power supply battery is not sufficiently charged. The satellite search position transmitting device according to claim 5. 7. A beacon for determining a beacon signal transmission mode for saving power consumption when detecting a temporal change in the position of an artificial satellite input from the position calculating unit and determining that the amount of the change is small. 6. The satellite search position transmitting device according to claim 5, further comprising a signal transmission control unit. 8. The satellite search position transmitting device according to claim 5, wherein the beacon signal transmitter transmits the remaining amount of the battery from the remaining sensor of the power supply battery together with the position of the artificial satellite as a notification radio wave.