CN107092013B - Phased array weather radar receiving and transmitting channel detection method and device - Google Patents
Phased array weather radar receiving and transmitting channel detection method and device Download PDFInfo
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- CN107092013B CN107092013B CN201710480877.9A CN201710480877A CN107092013B CN 107092013 B CN107092013 B CN 107092013B CN 201710480877 A CN201710480877 A CN 201710480877A CN 107092013 B CN107092013 B CN 107092013B
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- 238000001514 detection method Methods 0.000 title claims description 6
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a method and a device for detecting a receiving and transmitting channel of a phased array weather radar.A parabolic antenna is arranged opposite to a tested phased array weather radar antenna, and the normals of the two antennas coincide; the parabolic antenna feed source is connected with a radio frequency signal source, radio frequency signals are sent to corresponding receivers after being received by all antenna units of the phased array weather radar, and the received signal size and phase noise of all the receivers can be tested by using a frequency spectrograph; the wave controller controls a certain transmitter or a plurality of transmitters to be started, radio frequency signals are radiated out through the phased array antenna unit and collected by the parabolic antenna feed source to be sent to the frequency spectrograph; each transmitter is started respectively, and the signal intensity and the phase noise of each transmitter can be tested respectively; the phase characteristics can be tested by increasing the turn-on transmitters one by one. The invention can solve the technical problems of low efficiency, incapability of testing the matching characteristics of the receiving channel (transmitting channel) and the antenna and the like in the traditional testing technology.
Description
Technical Field
The invention relates to a meteorological radar performance detection technology.
Background
The phased array weather radar is provided with a plurality of receiving and transmitting channels, and is used for testing the amplitude and the phase, so that the phased array weather radar is an important work for developing the phased array weather radar. At present, the receiving (transmitter) and the antenna are tested respectively, and the test is low in efficiency, and the matching characteristic of the receiving channel (transmitting channel) and the antenna cannot be tested.
Disclosure of Invention
The invention aims to provide a method and a device for detecting a receiving and transmitting channel of a phased array weather radar, which are used for solving the technical problems that the efficiency is low, the matching characteristics of a receiving channel (transmitting channel) and an antenna cannot be tested in the traditional testing technology, and the like.
In order to achieve the above object, the present invention has the following technical scheme:
the phased array weather radar receiving and transmitting channel detection method comprises the following steps:
the opposite side of the tested phased array weather radar antenna is provided with a parabolic antenna with the antenna diameter larger than that of the tested phased array weather radar antenna, the normal line of the two antennas, namely the antenna axis is coincident, and the distance between the two antennas is 10 meters to 100 meters;
the parabolic antenna feed source is connected with a radio frequency signal source (such as an X-band signal source), radio frequency signals are changed into parallel beams through a parabolic surface to radiate to a phased array weather radar antenna, after each antenna unit of the phased array weather radar receives signals, the signals are sent to corresponding receivers, and the received signals and phase noise of each receiver can be tested by using a frequency spectrograph;
the wave controller controls a certain transmitter or a plurality of transmitters to be started, radio frequency signals are radiated out through the phased array antenna unit, and only parallel electromagnetic waves, namely parallel parabolic antenna shafts, are collected by a parabolic antenna feed source and sent to the frequency spectrograph;
the transmitters are turned on separately, the signal intensity and the phase noise of each transmitter can be respectively tested; the phase characteristics can be tested by increasing the turn-on transmitters one by one.
The phased array weather radar receiving and transmitting channel detection device comprises a parabolic antenna with the antenna diameter larger than that of a tested phased array weather radar antenna, a radio frequency signal source connected with a parabolic antenna feed source and used for transmitting radio frequency signals to the tested phased array weather radar, and a frequency spectrograph connected with the parabolic antenna feed source and used for receiving the radio frequency signals transmitted by the tested phased array weather radar.
The invention has the following advantages:
1) The antenna and the receiver of the receiving channel can be comprehensively tested.
2) The method can comprehensively test the antenna and the transmitter of the transmitting channel, can test the amplitude of the transmitting signal and can also check whether the phases are consistent.
Drawings
FIG. 1 is a phased array weather radar receiving channel testing apparatus structure of the present invention.
Fig. 2 is a phased array weather radar transmission channel testing apparatus structure of the present invention.
Description of the drawings: 1. the antenna comprises a parabolic antenna, a feed source, a parabolic antenna signal source, an electric wave, a tested phased array weather radar antenna, a tested phased array weather radar receiver, a tested phased array weather radar spectrometer or oscilloscope, a tested phased array weather radar transmitter, a frequency synthesizer, a wave controller, a frequency synthesizer, a frequency spectrometer and a frequency spectrometer, wherein the parabolic antenna, the feed source, the parabolic antenna signal source, the electric wave generator, the tested phased array weather radar antenna, the tested phased array weather radar receiver, the tested phased array weather radar spectrometer or oscilloscope, the tested phased array weather radar transmitter and the spectrometer are sequentially arranged in sequence.
Detailed Description
The working principle of the invention is shown in figures 1 and 2. The opposite side of the tested phased array weather radar antenna is provided with a parabolic antenna with the antenna diameter larger than that of the tested phased array weather radar antenna, the normals (antenna axes) of the two antennas are coincident, and the distance between the two antennas is 10 meters to 100 meters. Referring to fig. 1, a parabolic antenna feed source is connected with a radio frequency signal source (such as an X-band signal source), radio frequency signals are changed into parallel beams through a parabolic surface to radiate to a phased array weather radar antenna, after each antenna unit of the phased array weather radar receives signals, the signals are sent to corresponding receivers, and the received signals and phase noise of each receiver can be tested by using a frequency spectrograph.
Referring to fig. 2, the wave controller controls a certain transmitter or a plurality of transmitters to be turned on, and radio frequency signals are radiated out through the phased array antenna unit, but only parallel electromagnetic waves (parallel parabolic antenna axes) are collected by the parabolic antenna feed source and sent to the spectrometer. If each transmitter is turned on separately, the signal strength and phase noise of each transmitter can be tested separately. If the transmitters are turned on one by one, the phase characteristics can be tested, e.g. the power added is the power of the newly turned on transmitter, then the phases are identical. Antenna rack
The phased array antenna array surface normal is aligned with the parabolic antenna axis. The antenna is at a distance from ground.
Parabolic dimensions: twice as many antennas as are tested.
Distance between parabolic antenna and radar under test: 10-50 meters (determined experimentally).
If the influence of reflected waves on the indoor wall is large, absorbing materials can be attached to six walls.
Workflow process
Transmit channel debug test
1) Through the wave control, 1-path TR transmission is selected, radio frequency is radiated out through a phased array antenna, and signals are sent into a frequency spectrograph through a parabolic antenna feed source. The 64-way TR test is completed.
2) The transmitter test is gradually turned on at 2,4,8, 16, 32, 64.
Receive channel debug test
1) The signal generator signals are transmitted out through the parabolic antenna feed source.
2) The radar under test displays 64 paths of TR receiving signals through an oscilloscope or a spectrometer.
Claims (2)
1. A phased array weather radar receiving and transmitting channel detection method comprises the following steps: a parabolic antenna with the diameter larger than that of the tested phased array weather radar antenna is arranged opposite to the tested phased array weather radar antenna, the normals of the two antennas coincide, and the distance between the two antennas is 10 meters to 100 meters;
when detecting a receiving channel: the parabolic antenna feed source is connected with a radio frequency signal source, the radio frequency signal source is an X-band signal source, radio frequency signals are changed into parallel electromagnetic waves through a parabola to radiate to a phased array weather radar antenna, after each antenna unit of the phased array weather radar receives signals, the signals are sent to corresponding receivers, and a spectrometer is used for testing the received signal size and phase noise of each receiver;
when detecting the transmitting channel: the wave controller controls a certain transmitter or a plurality of transmitters to be started, and radio frequency signals radiate out through the phased array antenna unit, wherein parallel electromagnetic waves, namely electromagnetic waves of a parallel parabolic antenna shaft, are collected by a parabolic antenna feed source and sent to the frequency spectrograph; starting each transmitter respectively, and testing the signal intensity and phase noise of each transmitter respectively; the number of transmitters turned on is increased one by one, and the phase characteristics are tested.
2. A phased array weather radar receiving and transmitting channel detecting device for executing the detecting method according to claim 1, characterized by comprising a parabolic antenna with an antenna diameter larger than that of the antenna of the phased array weather radar to be tested, a radio frequency signal source connected with a parabolic antenna feed source for transmitting radio frequency signals to the phased array weather radar to be tested, and a spectrometer connected with the parabolic antenna feed source for receiving radio frequency signals transmitted by the phased array weather radar to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710480877.9A CN107092013B (en) | 2017-06-22 | 2017-06-22 | Phased array weather radar receiving and transmitting channel detection method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710480877.9A CN107092013B (en) | 2017-06-22 | 2017-06-22 | Phased array weather radar receiving and transmitting channel detection method and device |
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| Publication Number | Publication Date |
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| CN107092013A CN107092013A (en) | 2017-08-25 |
| CN107092013B true CN107092013B (en) | 2023-11-21 |
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| CN201710480877.9A Active CN107092013B (en) | 2017-06-22 | 2017-06-22 | Phased array weather radar receiving and transmitting channel detection method and device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390192B (en) * | 2017-09-20 | 2020-04-10 | 雷象科技（北京）有限公司 | Quick amplitude and phase consistency measuring method for phased array weather radar |
| CN112385086B (en) * | 2018-07-06 | 2021-08-20 | 华为技术有限公司 | Method and apparatus for calibrating phased array antenna |
| CN109597039B (en) * | 2018-12-24 | 2023-08-25 | 浙江宜通华盛科技有限公司 | Method for measuring amplitude phase of phased array radar receiving channel by lifting method |
| CN111342198B (en) * | 2020-03-17 | 2021-04-23 | 珠海微度芯创科技有限责任公司 | Wireless feed system for antenna measurement |
| CN113608184B (en) * | 2021-08-04 | 2023-09-22 | 上海无线电设备研究所 | Phased array antenna emission self-checking method |
| CN114063026A (en) * | 2021-09-29 | 2022-02-18 | 浙江大学 | Static detection device and method for phased array radar system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5781157A (en) * | 1996-08-05 | 1998-07-14 | Mcdonnell Douglas Corporation | Multiple beam radar system with enhanced sidelobe supression |
| CN201765324U (en) * | 2010-08-19 | 2011-03-16 | 四川九洲电器集团有限责任公司 | Automatic tester of phased-array antenna |
| CN104360328A (en) * | 2014-11-11 | 2015-02-18 | 西安电子工程研究所 | Phased array radar transmitting channel far-field calibration method and system |
| CN106842158A (en) * | 2017-03-31 | 2017-06-13 | 西安电子工程研究所 | A kind of phased-array radar transmission channel phase alignment method of testing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8373589B2 (en) * | 2010-05-26 | 2013-02-12 | Detect, Inc. | Rotational parabolic antenna with various feed configurations |
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2017
- 2017-06-22 CN CN201710480877.9A patent/CN107092013B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5781157A (en) * | 1996-08-05 | 1998-07-14 | Mcdonnell Douglas Corporation | Multiple beam radar system with enhanced sidelobe supression |
| CN201765324U (en) * | 2010-08-19 | 2011-03-16 | 四川九洲电器集团有限责任公司 | Automatic tester of phased-array antenna |
| CN104360328A (en) * | 2014-11-11 | 2015-02-18 | 西安电子工程研究所 | Phased array radar transmitting channel far-field calibration method and system |
| CN106842158A (en) * | 2017-03-31 | 2017-06-13 | 西安电子工程研究所 | A kind of phased-array radar transmission channel phase alignment method of testing |
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| CN107092013A (en) | 2017-08-25 |
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