CN108254725A - Phased-array radar transmission channel recycles calibration method - Google Patents
Phased-array radar transmission channel recycles calibration method Download PDFInfo
- Publication number
- CN108254725A CN108254725A CN201711380437.2A CN201711380437A CN108254725A CN 108254725 A CN108254725 A CN 108254725A CN 201711380437 A CN201711380437 A CN 201711380437A CN 108254725 A CN108254725 A CN 108254725A
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- phase
- transmission channel
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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
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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
- G01S7/4008—Means for monitoring or calibrating of parts of a radar system of transmitters
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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)
Abstract
The invention discloses a kind of phased-array radar transmission channels to recycle calibration method, and steps flow chart is as follows：1. each transmission channel carries out amplitude-phase filling-in to radar；2. each transmission channel transmitting of radar, the amplitude-phase of each receiving channel is measured by signal processor, obtains transmitting calibration a reference value；3. each transmission channel transmitting pulse of radar, receiving channel receives signal, and signal processor acquisition, processing signal obtain echo-signal and exomonental amplitude-phase；4. transmitting calibration a reference value is subtracted each other with working as secondary amplitude, the phase measured, it is added with this difference with each channel width phase offset；5. it returns to the 3. to walk.The present invention can solve phased-array radar increases the radar detection time due to calibration, and calibration frequency is low and the technical problems such as calibration accuracy difference.
Description
Technical field
The present invention relates to a kind of phased-array radar transmission channels to recycle calibration method.
Background technology
Usual phased-array radar calibration occupies the special period（Calibration cycle）It is calibrated.There is increases for this mode
The shortcomings of radar detection time, calibration frequency is low and calibration accuracy is poor.
Invention content
The object of the present invention is to provide a kind of phased-array radar transmission channels to recycle calibration method, to solve phased-array radar
Increase the radar detection time due to calibration, calibration frequency is low and the technical problems such as calibration accuracy difference.
In order to achieve the above-mentioned object of the invention, phased-array radar transmission channel cycle calibration method of the present invention, step stream
Journey is as follows：
1. each transmission channel carries out amplitude-phase filling-in to radar；
2. each transmission channel transmitting of radar, the amplitude-phase of each receiving channel is measured by signal processor, obtains transmitting calibration
A reference value；
3. each transmission channel transmitting pulse of radar, receiving channel receives signal, and signal processor acquisition, processing signal are returned
Wave signal and exomonental amplitude-phase；
4. transmitting calibration a reference value is subtracted each other with working as secondary amplitude, the phase measured, with this difference and each channel width phase offset phase
Add；
5. it returns to the 3. to walk.
The phased-array radar transmission channel recycles calibration method, is as follows：
(1), each channel amplitude of filling-in, phase
Phased-array radar is put into the wave beam of plane wave reception antenna, Phased Array Radar Antenna plane and plane wave reception antenna
Beam plane is parallel；64 transmission channels of radar emit respectively, and 64 groups of amplitudes, phases are obtained by plane wave reception antenna measurement
Value TAi, TQi, i=1,2 ... 64, on the basis of TA1, TQ1, by amplitude fading device and phase-shifter, by 63 transmission channel width
Degree, phase adjustment are to consistent with first passage；Namely TA1=TAi, TQ1=TQi, i=2,3 ... 64；
(2), automatic calibration a reference value is obtained
After each transmission channel amplitude of filling-in, phase, transmission channel transmitting signal using during emitting radiofrequency signal, passes through annular
Device leaks into the signal of receiving channel, measures 64 receiving channel amplitudes, phases ATAi, ATQi, i=1, and 2 ... 64；ATAi、ATQi
To calibrate a reference value automatically；
(3), automatic calibration
In radar operation, whenever radar emission, signal processor acquires 64 receiving channel signals, using emitting pulse period
Between, the signal of receiving channel is leaked by circulator, is calculated amplitude, phase OATAi, OATQi, i=1,2 ... 64；It will
ATAi, ATQi subtract OATAi, OATQi, i.e.,
DTAi=ATAi-OATAi
DTQi=ATQi-OATQi
By amplitude fading device and phase-shifter, 64 transmission channel amplitudes, phase are corresponded to and add DTAi, DTQi, i=1,2 ...
64,64 transmission channel amplitudes, phases is made to reach unanimity.
Advantages of the present invention and good effect：
The present invention is not take up the special period, but the radar emission period is utilized to acquire transmission channel amplitude-phase, is calibrated.
Calibration does not increase the radar detection time, and calibration frequency is high, and calibration accuracy is high.
Description of the drawings
Fig. 1 is the operation principle and structure diagram of the present invention.
Fig. 2 is the transmission channel automatic correcting measuring signal flow of the present invention.
Specific embodiment
The operation principle of the present invention is shown in Figure 1.It comprises the following specific steps that：
1st, each channel amplitude of filling-in, phase
Phased-array radar is put into plane wave（Amplitude, phase are identical on the vertical plane of the direction of propagation）In the wave beam of reception antenna,
Phased Array Radar Antenna plane is parallel with plane wave reception antenna beam plane.64 transmission channels of radar emit respectively, pass through
Plane wave reception antenna measurement obtains 64 groups of amplitudes, (i=1,2 ... 64), on the basis of TA1, TQ1, pass through by phase value TAi, TQi
Amplitude fading device and phase-shifter, by 63 transmission channel amplitudes, phase adjustment to consistent with first passage.Namely TA1=TAi,
TQ1=TQi(i=2,3…64)。
2nd, automatic calibration a reference value is obtained
After each transmission channel amplitude of filling-in, phase, transmission channel transmitting signal using during emitting radiofrequency signal, passes through annular
Device leaks into the signal of receiving channel, and by 64 receiving channel amplitudes of Fig. 2 measurements, (i=1,2 ... 64) for phase ATAi, ATQi.
ATAi, ATQi are automatic calibration a reference value.
3rd, automatic calibration
In radar operation, whenever radar emission, signal processor acquires 64 receiving channel signals by Fig. 2, utilizes transmitting
During pulse, the signal of receiving channel is leaked by circulator, be calculated amplitude, phase OATAi, OATQi (i=1,2 ...
64).ATAi, ATQi are subtracted into OATAi, OATQi, i.e.,
DTAi=ATAi-OATAi
DTQi=ATQi-OATQi
By amplitude fading device and phase-shifter, by 64 transmission channel amplitudes, phase correspond to plus DTAi, DTQi (i=1,2 ...
64) 64 transmission channel amplitudes, phases, is made to reach unanimity.
The transmission channel of the present invention calibrates flow automatically：
1st, to radar, each transmission channel carries out amplitude-phase filling-in.
2nd, each transmission channel transmitting of radar, the amplitude-phase of each receiving channel is measured by signal processor, is emitted
Calibrate a reference value.
3rd, each transmission channel transmitting pulse of radar, receiving channel receive signal, and signal processor acquisition, processing signal obtain
To echo-signal and exomonental amplitude-phase.
4th, transmitting calibration a reference value is subtracted each other with working as secondary amplitude, the phase measured, is mutually compensated with this difference and each channel width
Value is added.
5th, " " 3 " step is returned.
Claims (2)
1. phased-array radar transmission channel recycles calibration method, steps flow chart is as follows：
1. each transmission channel carries out amplitude-phase filling-in to radar；
2. each transmission channel transmitting of radar, the amplitude-phase of each receiving channel is measured by signal processor, obtains transmitting calibration
A reference value；
3. each transmission channel transmitting pulse of radar, receiving channel receives signal, and signal processor acquisition, processing signal are returned
Wave signal and exomonental amplitude-phase；
4. transmitting calibration a reference value is subtracted each other with working as secondary amplitude, the phase measured, with this difference and each channel width phase offset phase
Add；
5. it returns to the 3. to walk.
2. phased-array radar transmission channel according to claim 1 recycles calibration method, it is as follows：
(1), each channel amplitude of filling-in, phase
Phased-array radar is put into the wave beam of plane wave reception antenna, Phased Array Radar Antenna plane and plane wave reception antenna
Beam plane is parallel；64 transmission channels of radar emit respectively, and 64 groups of amplitudes, phases are obtained by plane wave reception antenna measurement
Value TAi, TQi, i=1,2 ... 64, on the basis of TA1, TQ1, by amplitude fading device and phase-shifter, by 63 transmission channel width
Degree, phase adjustment are to consistent with first passage；Namely TA1=TAi, TQ1=TQi, i=2,3 ... 64；
(2), automatic calibration a reference value is obtained
After each transmission channel amplitude of filling-in, phase, transmission channel transmitting signal using during emitting radiofrequency signal, passes through annular
Device leaks into the signal of receiving channel, calibrated automatically by transmission channel flow measure 64 receiving channel amplitudes, phase ATAi,
ATQi, i=1,2 ... 64；ATAi, ATQi are automatic calibration a reference value；
(3), automatic calibration
In radar operation, whenever radar emission, signal processor is calibrated flow by transmission channel and acquires 64 receptions automatically
Using during emitting pulse, the signal of receiving channel is leaked by circulator, amplitude, phase is calculated for channel signal
OATAi, OATQi, i=1,2 ... 64；ATAi, ATQi are subtracted into OATAi, OATQi, i.e.,
DTAi=ATAi-OATAi
DTQi=ATQi-OATQi
By amplitude fading device and phase-shifter, 64 transmission channel amplitudes, phase are corresponded to and add DTAi, DTQi, i=1,2 ...
64,64 transmission channel amplitudes, phases is made to reach unanimity.
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| CN201711380437.2A CN108254725B (en) | 2017-12-20 | 2017-12-20 | Cyclic calibration method for transmitting channel of phased array radar |
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Cited By (7)
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| CN109597039A (en) * | 2018-12-24 | 2019-04-09 | 雷象科技（北京）有限公司 | Lifting method phased-array radar receiving channel amplitude-phase measurement method |
| CN110456316A (en) * | 2019-07-05 | 2019-11-15 | 四川九州空管科技有限责任公司 | A kind of multifunction array radar multichannel transmitting-receiving correction system and method |
| CN111123220A (en) * | 2019-11-29 | 2020-05-08 | 瞬联软件科技（北京）有限公司 | Multichannel amplitude-phase calibration method and system for millimeter wave radar |
| CN114089049A (en) * | 2021-11-19 | 2022-02-25 | 北京环境特性研究所 | Antenna test calibration method and device, electronic equipment and storage medium |
| CN115032600A (en) * | 2022-08-10 | 2022-09-09 | 四川九洲空管科技有限责任公司 | Circular array secondary radar sectional type weight coefficient processing method based on matrix array |
| CN115913407A (en) * | 2022-12-12 | 2023-04-04 | 中国航天科工集团八五一一研究所 | One-dimensional phased array self-transmitting and self-receiving calibration method based on FPGA |
| CN117890690A (en) * | 2024-03-18 | 2024-04-16 | 成都华兴大地科技有限公司 | Phased array calibration method without control amplitude by utilizing difference wave beams |
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| 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 |
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| CN110456316A (en) * | 2019-07-05 | 2019-11-15 | 四川九州空管科技有限责任公司 | A kind of multifunction array radar multichannel transmitting-receiving correction system and method |
| CN110456316B (en) * | 2019-07-05 | 2021-02-26 | 四川九洲空管科技有限责任公司 | Multi-channel transceiving correction system and method for multifunctional phased array radar |
| CN111123220B (en) * | 2019-11-29 | 2023-11-07 | 瞬联软件科技（北京）有限公司 | Multi-channel amplitude and phase calibration method and system for millimeter wave radar |
| CN111123220A (en) * | 2019-11-29 | 2020-05-08 | 瞬联软件科技（北京）有限公司 | Multichannel amplitude-phase calibration method and system for millimeter wave radar |
| CN114089049A (en) * | 2021-11-19 | 2022-02-25 | 北京环境特性研究所 | Antenna test calibration method and device, electronic equipment and storage medium |
| CN115032600A (en) * | 2022-08-10 | 2022-09-09 | 四川九洲空管科技有限责任公司 | Circular array secondary radar sectional type weight coefficient processing method based on matrix array |
| CN115032600B (en) * | 2022-08-10 | 2022-11-08 | 四川九洲空管科技有限责任公司 | Circular array secondary radar sectional weight coefficient processing method based on matrix array |
| CN115913407A (en) * | 2022-12-12 | 2023-04-04 | 中国航天科工集团八五一一研究所 | One-dimensional phased array self-transmitting and self-receiving calibration method based on FPGA |
| CN115913407B (en) * | 2022-12-12 | 2024-10-18 | 中国航天科工集团八五一一研究所 | FPGA-based one-dimensional phased array spontaneous self-receiving calibration method |
| CN117890690A (en) * | 2024-03-18 | 2024-04-16 | 成都华兴大地科技有限公司 | Phased array calibration method without control amplitude by utilizing difference wave beams |
| CN117890690B (en) * | 2024-03-18 | 2024-05-10 | 成都华兴大地科技有限公司 | Phased array calibration method without control amplitude by utilizing difference wave beams |
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