CN105467371A - Amplitude phase calibrating device for semi-closed loop coupled phased array channels - Google Patents
Amplitude phase calibrating device for semi-closed loop coupled phased array channels Download PDFInfo
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- CN105467371A CN105467371A CN201510874578.4A CN201510874578A CN105467371A CN 105467371 A CN105467371 A CN 105467371A CN 201510874578 A CN201510874578 A CN 201510874578A CN 105467371 A CN105467371 A CN 105467371A
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- phased array
- passage
- coupling
- calibration
- amplitude
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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
-
- 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
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S2013/0236—Special technical features
- G01S2013/0245—Radar with phased array antenna
Abstract
The invention provides an amplitude phase calibrating device for semi-closed loop coupled phased array channels. Each channel of an active phased array plane is coupled to one waveguide coupler, thereby forming a coupling loop. Two ends of the coupling loop are connected with a signal receiving and transmitting module and a load. When a channel of the active phased array plane transmits an amplitude phase, a transmission system of the active phased array plane transmits a signal, and the signal receiving and transmitting module of the coupling loop receives the signal. When the channel of the active phased array plane receives the amplitude phase, the signal receiving and transmitting module of the coupling loop transmits a signal, and a system of the active phased array plane receives the signal. The transmitted or received amplitude phase information is fed back to a beam control dispatcher of an array phased array radar for amplitude phase calibration. The device not only can be used for the amplitude phase calibration of a phased array before assembly, also can be used for channel detection and amplitude phase calibration after assembly, enables the waveform design of the phased array to be more accurate, and enables the performance of the array phased array radar to be better.
Description
Technical field
The present invention relates to a kind of collimation technique of phased array width phase.
Background technology
Active phased array is in order to reduce interference and to counter-antiradiation attack, usually need Sidelobe or ultralow width lobe.This needs to arrange appropriate bore irradiation energy to front, and to obtain the Sidelobe antenna pattern of expectation, thus require that the width of each unit channel is stablized mutually, consistance is good and controlled.In actual conditions, due to former device performance difference, circuit design and processing and manufacturing equal error, make the amplitude-phase consistency between each passage poor, thus need to carry out calibration of amplitude and phase to it.The calibration of amplitude and phase of usual front is at the actinal surface of front or middle place erection calibration probe.Actinal surface calibration, by Mechanical Moving probe positions, detects amplitude and the phase place of each passage one by one.The calibration of middle place is in microwave dark room, by probe placement field areas in front, opens passage one by one, the amplitude of sense channel and phase place.There is following problem in such front collimation technique:
(1) actinal surface calibration steps requires probe to the position of each channel unit unanimously, and this is very high to the accurate provisioning request in position time mobile, and owing to wanting Mechanical Moving to pop one's head in each channel unit, when the calibration of large-scale front, spended time is longer.
(2) in, place calibration steps requires to have good external environment condition, the metrical error that minimizing Ambient and multipath effect are brought, and normally carries out in microwave dark room.
(3) no matter be that actinal surface is calibrated or place calibration in front, after phased front is formally equipped, all cannot carry out channel monitoring and calibration of amplitude and phase correction expediently.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of active phased array passage calibration of amplitude and phase device based on semiclosed return circuit coupling, on front feeding network, each channel amplitude and phase information is gathered by the waveguide calibration loop of coupling, front width is calibrated mutually in good time, the calibration of amplitude and phase before front equipment can not only be applied to, passage quality monitoring and testing after front armament-related work can also be applied to, promote the performance of phased-array radar.
The technical solution adopted for the present invention to solve the technical problems is: comprise some waveguide couplers, a passage of each waveguide coupler coupling active phased array front, the waveguide coupler of serial connection forms coupling circuit, a termination signal transmitting and receiving module of coupling circuit, another terminating load; When detecting the channel emission width phase time of active phased array front, being transmitted by the emission coefficient of Active Phased Array Radar, opening each passage one by one, the signal transmitting and receiving module Received signal strength of coupling circuit, reading the transmitting width phase information of each passage; When detecting the channel reception width phase time of active phased array front, being transmitted by the signal transmitting and receiving module of coupling circuit, opening each passage one by one, the receiving system Received signal strength of Active Phased Array Radar, reading the reception width phase information of each passage; Launch width phase information or receive width phase information and feed back in the wave beam control distributor of Active Phased Array Radar, carry out calibration of amplitude and phase.
Described waveguide coupler is arranged on by the feeder line between active phased array front and T/R assembly.
Described waveguide coupler uses the R-joining on Narrow Wall of Waveguide limit to carry out Energy Coupling transmission.
Described waveguide coupler replaces with microstrip lines or strip line coupler.
The coupling energy of described waveguide coupler is the least energy that the receiving system of Active Phased Array Radar can detect.
The invention has the beneficial effects as follows: the precise positioning problem solving actinal surface probe in actinal surface calibration steps, the time of calibration is greatly shortened relative to actinal surface calibration steps; Compared with place calibration steps in front, external environment condition when the present invention calibrates requires relatively low.The present invention can not only be applied to the calibration of amplitude and phase before phased array equipment, can also be applied to the Air conduct measurement after equipment and calibration of amplitude and phase, and make phased array Waveform Design more accurate, the performance of phased-array radar is better.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present invention;
Fig. 2 is calibration of amplitude and phase network diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described, the present invention includes but be not limited only to following embodiment.
Active phased array passage calibration of amplitude and phase technology based on semiclosed return circuit coupling provided by the invention, the waveguide of certain stiffness of coupling is used to calibrate semiclosed loop, the feeding network of phased array is coupled mutually to the width of passage, the width phase of timely monitor and each passage of calibration front, the calibration of amplitude and phase before front equipment can not only be applied to, the passage quality after phased array equipment can also be applied to detect and calibration of amplitude and phase, be applied to phased array radar system.
The present invention uses the waveguide coupler of a narrow limit R-joining coupling on each passage of front, forms coupling circuit.One termination signal of coupling circuit receives/send out module, another terminating load.When sense channel launches width phase time, transmitted by the emission coefficient of phased-array radar, open each passage one by one, the signal receiving module Received signal strength of coupling circuit, the transmitting width phase information of fetch channel.When sense channel receives width phase time, transmitted by the transmitter module of coupling circuit, open each passage one by one, the receiving system Received signal strength of phased-array radar, the reception width phase information of fetch channel.The result feedback detected controls in distributor to wave beam, makes the Sidelobe effect of array more accurate, can improve the performance of phased-array radar.
When the present invention designs, first pair array far-field pattern is analyzed, and aerial array far field direction of an electric field figure computing formula is as follows:
E in formula
elementunit direction of an electric field figure, A
ibe the current amplitude of each channel actuation, k=2 π/λ is wave beam, and λ is operation wavelength, and d is unit interval, θ '
iit is the phase place of each passage.
By arranging the excitation amplitude A of each passage
iwith phase theta '
idesign the various waveforms of phased array.In order to the accuracy of Waveform Design, the amplitude that each passage is initial and phase place must be known, and revise, be i.e. the width phase monitoring and testing of passage.
As shown in Figure 1, the feeder line between antenna and T/R assembly is other arranges a coupling mechanism, is directly completed reception and the transmitting of correction signal by coupling mechanism.Launch timing, control as accepting state with reference to correction channel, the transmission channel emission standard signal successively of array, by the coupling corrective network of antenna by all transmit to be coupled to receive with reference to correction channel, by receive all transmit and standard signal compare the amplitude phase error factor calculating all transmission channels, result of calculation is stored in the correction factor for weighting coefficient in wave beam comprehensive unit.Do reception timing, by reference to correction channel emission standard signal, the all receiving cables of array receive, all Received signal strength and standard emission signal are compared the amplitude phase error factor calculating and carry out all receiving cables, result of calculation is stored in the correction factor for weighting coefficient in wave beam comprehensive unit.
As shown in Figure 2, each coupling mechanism uses the R-joining on Narrow Wall of Waveguide limit to carry out Energy Coupling transmission.When front receives calibration, send out detection signal, from 1,2,3 from calibration T/R ... N-2, N-1, N channel receive amplitude and phase place in turn.When a detection passage, other passages all connect load state.When signal transmits in the waveguide, transmission attenuation is very little, almost can ignore.Transmit successively by 1,2,3 ... coupling aperture, transmission limit, limit is coupled, and the degree of coupling is more than-50 dB, is about 7.9 × 10 of gross energy
-6doubly (calculate by-51dB), the energy that coupling reduces can be ignored.During phase-detection, consider that different detection port is from the distance receiving/send out module, electromagnetic wave transmits different distance in the waveguide, and its phase place is different, this part phase place be compensated.When front transmitting calibration, from 1,2,3 ... the T/R of N-2, N-1, N channel transmits in turn, and other ports connect load state, from calibration T/R module Received signal strength, consistent when its calibrating principle and reception calibration.
In use, user should first according to phased array feeding network form design calibration network, and being not limited to waveguide-coupled calibration network, can also be the calibration network such as microstrip lines, strip line coupling in the present invention.The size of its secondary appropriate design calibration network coupling energy, normally minimum within the scope of receiver detection sensitivity coupling energy, like this when radar normally works, reduces the energy loss be coupled as much as possible.Finally build calibration network framework according to the flow process of design.
Claims (5)
1. the phased array passage calibration of amplitude and phase device of a semiclosed return circuit coupling, comprise some waveguide couplers, it is characterized in that: a passage of each waveguide coupler coupling active phased array front, the waveguide coupler of serial connection forms coupling circuit, one termination signal transmitting and receiving module of coupling circuit, another terminating load; When detecting the channel emission width phase time of active phased array front, being transmitted by the emission coefficient of Active Phased Array Radar, opening each passage one by one, the signal transmitting and receiving module Received signal strength of coupling circuit, reading the transmitting width phase information of each passage; When detecting the channel reception width phase time of active phased array front, being transmitted by the signal transmitting and receiving module of coupling circuit, opening each passage one by one, the receiving system Received signal strength of Active Phased Array Radar, reading the reception width phase information of each passage; Launch width phase information or receive width phase information and feed back in the wave beam control distributor of Active Phased Array Radar, carry out calibration of amplitude and phase.
2. the phased array passage calibration of amplitude and phase device of semiclosed return circuit coupling according to claim 1, is characterized in that: described waveguide coupler is arranged on by the feeder line between active phased array front and T/R assembly.
3. the phased array passage calibration of amplitude and phase device of semiclosed return circuit coupling according to claim 1, is characterized in that: described waveguide coupler uses the R-joining on Narrow Wall of Waveguide limit to carry out Energy Coupling transmission.
4. the phased array passage calibration of amplitude and phase device of semiclosed return circuit coupling according to claim 1, is characterized in that: described waveguide coupler replaces with microstrip lines or strip line coupler.
5. the phased array passage calibration of amplitude and phase device of semiclosed return circuit coupling according to claim 1, is characterized in that: the coupling energy of described waveguide coupler is the least energy that the receiving system of Active Phased Array Radar can detect.
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| CN201510874578.4A CN105467371A (en) | 2015-12-03 | 2015-12-03 | Amplitude phase calibrating device for semi-closed loop coupled phased array channels |
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| CN201510874578.4A CN105467371A (en) | 2015-12-03 | 2015-12-03 | Amplitude phase calibrating device for semi-closed loop coupled phased array channels |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317639A (en) * | 2017-07-07 | 2017-11-03 | 广东曼克维通信科技有限公司 | The near field calibration method of testing and device of phased array antenna |
| CN107561514A (en) * | 2017-07-27 | 2018-01-09 | 中国船舶重工集团公司第七二四研究所 | A kind of frequency sweeps scaling method in three-dimensional radar rcs measurement multichannel |
| CN107809292A (en) * | 2017-10-09 | 2018-03-16 | 武汉滨湖电子有限责任公司 | A kind of transmission channel multichannel phase means for correcting and bearing calibration |
| CN108352908A (en) * | 2016-07-30 | 2018-07-31 | 华为技术有限公司 | A kind of calibration method and device of aerial array |
| CN108549058A (en) * | 2018-02-28 | 2018-09-18 | 四川九洲电器集团有限责任公司 | Secondary radar broadband active phased array system and dynamic calibration method thereof |
| CN109116310A (en) * | 2018-09-11 | 2019-01-01 | 广东圣大电子有限公司 | A kind of aircraft collision avoidance system secondary radar radio frequency transceiver |
| CN109557519A (en) * | 2018-12-24 | 2019-04-02 | 中国电子科技集团公司第二十研究所 | A kind of extensive phased array multichannel calibration circuit based on distribution mode |
| CN109683146A (en) * | 2018-12-24 | 2019-04-26 | 中国电子科技集团公司第二十研究所 | A kind of phased array emission calibrating method based on orthogonal coding waveform |
| CN109901125A (en) * | 2019-03-11 | 2019-06-18 | 中国电子科技集团公司第三十八研究所 | A kind of airborne two-dimentional Connectors for Active Phased Array Radar antenna calibration device 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 |
| CN111796273A (en) * | 2020-07-14 | 2020-10-20 | 南京理工大学 | Anti-radiation seeker signal processing method and system based on FPGA |
| CN112201933A (en) * | 2020-09-09 | 2021-01-08 | 中国电子科技集团公司第三十八研究所 | Array antenna of compact lightweight multi-scanning system |
| CN112881992A (en) * | 2021-02-25 | 2021-06-01 | 四川九洲电器集团有限责任公司 | Channel amplitude and phase consistency self-checking method and device and computer equipment |
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| CN104122535A (en) * | 2014-07-17 | 2014-10-29 | 中国电子科技集团公司第二十研究所 | True time delay device based phased-array antenna broadband anti-interference method |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108352908A (en) * | 2016-07-30 | 2018-07-31 | 华为技术有限公司 | A kind of calibration method and device of aerial array |
| CN108352908B (en) * | 2016-07-30 | 2020-04-21 | 华为技术有限公司 | Antenna array calibration method and device |
| CN107317639A (en) * | 2017-07-07 | 2017-11-03 | 广东曼克维通信科技有限公司 | The near field calibration method of testing and device of phased array antenna |
| CN107561514A (en) * | 2017-07-27 | 2018-01-09 | 中国船舶重工集团公司第七二四研究所 | A kind of frequency sweeps scaling method in three-dimensional radar rcs measurement multichannel |
| CN107809292A (en) * | 2017-10-09 | 2018-03-16 | 武汉滨湖电子有限责任公司 | A kind of transmission channel multichannel phase means for correcting and bearing calibration |
| CN108549058A (en) * | 2018-02-28 | 2018-09-18 | 四川九洲电器集团有限责任公司 | Secondary radar broadband active phased array system and dynamic calibration method thereof |
| CN109116310B (en) * | 2018-09-11 | 2023-10-20 | 广东圣大电子有限公司 | Secondary radar radio frequency transceiver of airplane anti-collision system |
| CN109116310A (en) * | 2018-09-11 | 2019-01-01 | 广东圣大电子有限公司 | A kind of aircraft collision avoidance system secondary radar radio frequency transceiver |
| CN109557519A (en) * | 2018-12-24 | 2019-04-02 | 中国电子科技集团公司第二十研究所 | A kind of extensive phased array multichannel calibration circuit based on distribution mode |
| CN109683146A (en) * | 2018-12-24 | 2019-04-26 | 中国电子科技集团公司第二十研究所 | A kind of phased array emission calibrating method based on orthogonal coding waveform |
| CN109901125A (en) * | 2019-03-11 | 2019-06-18 | 中国电子科技集团公司第三十八研究所 | A kind of airborne two-dimentional Connectors for Active Phased Array Radar antenna calibration device and method |
| CN109901125B (en) * | 2019-03-11 | 2021-07-23 | 中国电子科技集团公司第三十八研究所 | Airborne two-dimensional active phased array radar antenna correction device 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 |
| 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 |
| CN111796273A (en) * | 2020-07-14 | 2020-10-20 | 南京理工大学 | Anti-radiation seeker signal processing method and system based on FPGA |
| CN111796273B (en) * | 2020-07-14 | 2023-12-05 | 南京理工大学 | Method and system for processing anti-radiation seeker signal based on FPGA |
| CN112201933A (en) * | 2020-09-09 | 2021-01-08 | 中国电子科技集团公司第三十八研究所 | Array antenna of compact lightweight multi-scanning system |
| CN112881992A (en) * | 2021-02-25 | 2021-06-01 | 四川九洲电器集团有限责任公司 | Channel amplitude and phase consistency self-checking method and device and computer equipment |
| CN112881992B (en) * | 2021-02-25 | 2022-02-11 | 四川九洲电器集团有限责任公司 | Channel amplitude and phase consistency self-checking method and device and computer equipment |
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