CN105158768A - Waveguide slot array antenna calibration device and calibration method - Google Patents
Waveguide slot array antenna calibration device and calibration method Download PDFInfo
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- CN105158768A CN105158768A CN201510509282.2A CN201510509282A CN105158768A CN 105158768 A CN105158768 A CN 105158768A CN 201510509282 A CN201510509282 A CN 201510509282A CN 105158768 A CN105158768 A CN 105158768A
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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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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Abstract
The invention belongs to the antenna calibration field and relates to a waveguide slot array antenna calibration device and calibration method. According to the calibration device and calibration method of the invention, amplitude and phase calibration of a waveguide slot array antenna system is performed in a microwave un-reflected chamber; calibrated data are stored in a wave control system; and a debugged wave control system, waveguide slot array antenna, T/R assembly and radio frequency transmission line are installed in a radar product. With the device and method of the invention adopted, a built-in calibration network of a radar can be omitted, and the weight of the radar can be reduced, and installation space can be decreased.
Description
Technical field
The present invention relates to antenna calibration field, particularly relate to a kind of waveguide gap array radar channel correcting device and bearing calibration.
Background technology
Waveguide slot array antenna is because of its feature that processing is simple, structural strength is high, consistance is better, power capacity is large, and the application in phased array radar is comparatively extensive.Using Waveguide slot array antenna as the phased-array radar of antenna, there is the features such as one dimension is swept mutually, launching beam figuration, multiple target tracking, the basis of these features is that each transmitting and receiving passage of One-dimension Phased Array radar can independent span of control limit of control and phase place, and each channel amplitude and the good consistance of phase place, be the important guarantee that One-dimension Phased Array radar plays these features.Due to the inconsistency of the material of passage in Practical Project, processing and erection, cause each channel amplitude and phase place to there is larger difference, the performance of the phased-array radar based on Waveguide slot array antenna cannot be ensured.
For ensureing the performance of waveguide gap array phased-array radar wave beam performance, need to correct the amplitude of passage and phase place, phased-array radar can adopt the method for built-in corrective network to correct system, and in certain special cases, do not need to carry out real time correction to system, or in order to control system weight, system space limited cannot built-in corrective system when, need to take other means to carry out the amplitude-phase error correction of passage.
Summary of the invention
For the deficiency of background technology, the invention provides a kind of waveguide gap array radar channel correcting device and bearing calibration, data after correction, by carrying out the correction of Waveguide slot array antenna system amplitude, phase place at microwave dark room, are then stored in beam controlling system by the present invention; Finally the beam controlling system debugged, Waveguide slot array antenna, T/R assembly and radio-frequency transmission line are arranged in Radar Products.So just, the built-in corrective network of radar can be cancelled, alleviate the weight of radar, save installing space.
Solving waveguide gap array radar system when not carrying out real time correction, radar system being carried out to the problem of an accurate calibration.
Technical scheme of the present invention is: a kind of Waveguide slot array antenna bearing calibration, and trimming process corrects in microwave dark room, comprises the following steps: the correction of transmission channel amplitude-phase and the correction of receiving cable amplitude-phase;
The correction of transmission channel amplitude-phase comprises the following steps: utilize near-field test control vector network analyzer to carry out the transmitting and receiving of signal, gantry is carried out position and moved, simultaneously automatic control testing system data acquisition;
The signal flow that transmission channel amplitude-phase corrects is: vector network analyzer port launches continuous wave signal, launched by Waveguide slot array antenna after power division network, T/R assembly and radio-frequency transmission line, the signal amplitude that T/R assembly transmission channel is arranged and phase place are expectation value; Test probe receives the signal that Waveguide slot array antenna is launched, and enter vector network analyzer port through test cable, the amplitude that vector network analyzer port accepts post-sampling obtains and phase value are test value;
Respectively the amplitude in test value and phase place are carried out from normalizing, then the amplitude of expectation value and phase place are carried out from normalizing, the amplitude of expectation value after normalizing and phase place is utilized to subtract each other with the amplitude of the test value after normalizing and phase place respectively, obtain interchannel amplitude-phase poor, this amplitude difference and phase differential are the amplitude and phase compensation value of systems radiate passage, and offset is solidified in beam controlling system, call as correction parameter;
The correction of receiving cable amplitude-phase comprises the following steps: utilize near-field test control vector network analyzer to carry out the transmitting and receiving of signal, gantry is carried out position and moved, simultaneously automatic control testing system data acquisition;
The signal flow that receiving cable amplitude-phase corrects is: vector network analyzer launches continuous wave signal, probe is launched after tested, received by Waveguide slot array antenna, carry out Signal reception via after T/R assembly receiving cable, radio-frequency transmission line, power division network by vector network analyzer; The amplitude that T/R assembly receiving cable is arranged and phase value are expectation value, and the amplitude that vector network analyzer reception post-sampling obtains and phase value are test value;
Respectively the amplitude in test value and phase place are carried out from normalizing, then the amplitude of expectation value and phase place are carried out from normalizing, the amplitude of expectation value after normalizing and phase place is utilized to subtract each other with the amplitude of the test value after normalizing and phase place respectively, obtain interchannel amplitude-phase poor, this amplitude difference and phase differential are the amplitude and phase compensation value of system receive channel, and offset is solidified in beam controlling system, call as correction parameter.
According to Waveguide slot array antenna bearing calibration as above, it is characterized in that: described test probe and Waveguide slot array antenna keep vertical, and the spacing between test probe and Waveguide slot array antenna should be less than 3mm.
A kind of Waveguide slot array antenna means for correcting, comprises Waveguide slot array antenna (1), T/R assembly (2), power division network (3), radio-frequency transmission line (4), test cable (5), test probe (6), beam controlling system, automatic control testing system, vector network analyzer and scanning support, Waveguide slot array antenna (1) is connected with T/R assembly (2) with by radio-frequency transmission line (4), T/R assembly (2) is connected with beam controlling system and power division network (3) respectively, power division network (3) is connected with vector network analyzer by test cable (5), vector network analyzer is connected with test probe (6) by test cable (5), it is characterized in that: shown automatic control testing system controls the transmitting and receiving signal of vector network analyzer, the movement of gantry is synchronous with the launch and accept of signal simultaneously, described test probe (6) is contained on scanning support, scanning support can move on platform, and then the test one by one realized Waveguide slot array antenna (1).
According to Waveguide slot array antenna means for correcting as above, it is characterized in that: described test probe (6) keeps vertical with Waveguide slot array antenna (1), and the spacing between test probe (6) and Waveguide slot array antenna (1) should be less than 3mm.
The invention has the beneficial effects as follows: solve waveguide gap array radar system do not need to carry out real time correction and cannot built-in corrective system time, utilize microwave dark room test macro to carry out the amplitude-phase consistance Fast Correction of radar system passage.
Accompanying drawing explanation
Fig. 1 is the system composition of waveguide gap array radar darkroom method for quickly correcting;
Fig. 2 is for launching correcting process figure;
Fig. 3 is for receiving correcting process figure.
Embodiment
Description of reference numerals: 1-Waveguide slot array antenna, 2-T/R assembly, 3-power division network, 4-radio-frequency transmission line, 5-test cable, 6-test probe.
Below in conjunction with accompanying drawing, the present invention is described further.
As shown in Figure 1, a kind of Waveguide slot array antenna Quick correction device of the present invention comprises Waveguide slot array antenna 1, T/R assembly 2, power division network 3, radio-frequency transmission line 4, test cable 5, test probe 6, beam controlling system, automatic control testing system, vector network analyzer and scanning support.Test probe 6 is contained on scanning support, and scanning support can move on platform, so realize to Waveguide slot array antenna 1 by each test.Waveguide slot array antenna means for correcting of the present invention carries out the correction of system amplitude, phase place at microwave dark room, the data after correction are stored in beam controlling system; Then the beam controlling system debugged, Waveguide slot array antenna 1, T/R assembly 2 and radio-frequency transmission line 4 are arranged in Radar Products, so just cancel the built-in corrective network of radar, alleviate the weight of radar, saved installing space.
As Fig. 1, Waveguide slot array antenna darkroom bearing calibration of the present invention, its concrete grammar is, Waveguide slot array antenna 1 is connected with T/R assembly 2 by radio-frequency transmission line 4, beam controlling system is used for the amplitude of control T/R assembly 2 and phase value, signal is carried out merit and divides and synthesize by power division network 3, vector network analyzer connects power division network 3 and test probe 6 respectively by test cable 5, automatic control testing system controls vector network analyzer transmitting and receiving signal, and the movement of gantry is synchronous with the launch and accept of signal simultaneously.The coupling of adjacent antenna energy during for reducing to test, test probe 6 selects the optical waveguide probe with Waveguide slot antenna same lumen size, for Ku wave band Waveguide slot phased array, antenna adopts BJ-180 standard waveguide design processing, then test probe also answers BJ-180 standard waveguide test probe.Test probe 6 keeps vertical with Waveguide slot array antenna 1, spacing between test probe 6 and Waveguide slot array antenna 1 should be less than 3mm, the polarization mode of test probe is consistent with the polarization mode of antenna, the polarization mode of such as Waveguide slot array antenna 1 is vertical polarization, then the polarization mode of test probe 6 is also vertical polarization.
When test starts, gantry moves should aim at the larger gap of first Waveguide slot antenna radiation amplitude by test probe 6, such as single Waveguide slot array antenna has 20 gaps, then aim at the 10th or 11 gaps, the spacing arranged between automatic control testing system gantry sampling interval with adjacent two Waveguide slot antennas is equal, sampled point number is equal with the antenna number needing to test, utilize near-field test software control scanning support to move, complete the test of radar system channel amplitude and phase place.
As shown in Figure 1, during transmission channel amplitude and phase correction, the amplitude-phase utilizing beam controlling system control T/R assembly transmission channel is expectation value, vector network analyzer 1 port launches continuous wave signal, through power division network 3, launched by Waveguide slot array antenna 1 after T/R assembly 2 and radio-frequency transmission line 4, launch continuous wave for preventing T/R assembly 2 to cause and burn, T/R assembly power supply voltage need be reduced, to ensure that T/R assembly 2 can launch continuous wave, test probe 6 receives the signal that Waveguide slot array antenna 1 is launched, vector network analyzer 2 port is entered through radio-frequency transmission line.Automatic control testing system gantry moves and carries out signal sampling, the one group amplitude-phase test value identical with transmission channel number is obtained after gathering, respectively the amplitude in test value and phase place are carried out from normalizing, then the amplitude of expectation value and phase place are carried out from normalizing, the amplitude of expectation value after normalizing and phase place is utilized to subtract each other with the amplitude of the test value after normalizing and phase place respectively, obtain interchannel amplitude-phase poor, this amplitude difference and phase differential are the amplitude and phase compensation value of system channel, this amplitude and phase compensation value is utilized to be compensated by the range value of beam controlling system control T/R assembly transmission channel and phase value, and offset is solidified in beam controlling system, call as correction parameter.Transmission channel amplitude and phase correction process flow diagram as shown in Figure 2.
During receiving cable amplitude and phase correction, beam controlling system control T/R assembly 2 is accepting state, and the width of control T/R assembly 2 is worth for expectation value mutually, continuous wave signal is launched by vector network analyzer 2 port, probe 6 is received by Waveguide slot antenna 1 after launching after tested, after radio-frequency transmission line 4, T/R assembly 2 and power division network 3, carry out Signal reception by 1 port of vector network analyzer.Automatic control testing system gantry moves and carries out signal sampling, and after gathering, obtain the one group amplitude-phase value identical with transmission channel number is test value.Respectively the amplitude in test value and phase place are carried out from normalizing, then the amplitude of expectation value and phase place are carried out from normalizing, the amplitude of expectation value after normalizing and phase place is utilized to subtract each other with the amplitude of the test value after normalizing and phase place respectively, obtain interchannel amplitude-phase poor, this amplitude difference and phase differential are the amplitude and phase compensation value of system channel, this amplitude and phase compensation value is utilized to be compensated by the range value of beam controlling system control T/R assembly receiving cable and phase value, and offset is solidified in beam controlling system, call as correction parameter.Receiving cable amplitude and phase correction process flow diagram as shown in Figure 3.
Of the present invention from normalization method, can with the test value of any Waveguide slot array antenna as reference value, the amplitude-phase value of the most handy intermediate wave waveguide slot array antenna is as reference value.
Claims (4)
1. a Waveguide slot array antenna bearing calibration, trimming process corrects in microwave dark room, comprises the following steps: the correction of transmission channel amplitude-phase and the correction of receiving cable amplitude-phase;
The correction of transmission channel amplitude-phase comprises the following steps: utilize near-field test control vector network analyzer to carry out the transmitting and receiving of signal, gantry is carried out position and moved, simultaneously automatic control testing system data acquisition;
The signal flow that transmission channel amplitude-phase corrects is: vector network analyzer port launches continuous wave signal, launched by Waveguide slot array antenna after power division network, T/R assembly and radio-frequency transmission line, the signal amplitude that T/R assembly transmission channel is arranged and phase place are expectation value; Test probe receives the signal that Waveguide slot array antenna is launched, and enter vector network analyzer port through test cable, the amplitude that vector network analyzer port accepts post-sampling obtains and phase value are test value;
Respectively the amplitude in test value and phase place are carried out from normalizing, then the amplitude of expectation value and phase place are carried out from normalizing, the amplitude of expectation value after normalizing and phase place is utilized to subtract each other with the amplitude of the test value after normalizing and phase place respectively, obtain interchannel amplitude-phase poor, this amplitude difference and phase differential are the amplitude and phase compensation value of systems radiate passage, and offset is solidified in beam controlling system, call as correction parameter;
The correction of receiving cable amplitude-phase comprises the following steps: utilize near-field test control vector network analyzer to carry out the transmitting and receiving of signal, gantry is carried out position and moved, simultaneously automatic control testing system data acquisition;
The signal flow that receiving cable amplitude-phase corrects is: vector network analyzer launches continuous wave signal, probe is launched after tested, received by Waveguide slot array antenna, carry out Signal reception via after T/R assembly receiving cable, radio-frequency transmission line, power division network by vector network analyzer; The amplitude that T/R assembly receiving cable is arranged and phase value are expectation value, and the amplitude that vector network analyzer reception post-sampling obtains and phase value are test value;
Respectively the amplitude in test value and phase place are carried out from normalizing, then the amplitude of expectation value and phase place are carried out from normalizing, the amplitude of expectation value after normalizing and phase place is utilized to subtract each other with the amplitude of the test value after normalizing and phase place respectively, obtain interchannel amplitude-phase poor, this amplitude difference and phase differential are the amplitude and phase compensation value of system receive channel, and offset is solidified in beam controlling system, call as correction parameter.
2. Waveguide slot array antenna bearing calibration according to claim 1, is characterized in that: described test probe and Waveguide slot array antenna keep vertical, and the spacing between test probe and Waveguide slot array antenna should be less than 3mm.
3. a Waveguide slot array antenna means for correcting, comprises Waveguide slot array antenna (1), T/R assembly (2), power division network (3), radio-frequency transmission line (4), test cable (5), test probe (6), beam controlling system, automatic control testing system, vector network analyzer and scanning support, Waveguide slot array antenna (1) is connected with T/R assembly (2) with by radio-frequency transmission line (4), T/R assembly (2) is connected with beam controlling system and power division network (3) respectively, power division network (3) is connected with vector network analyzer by test cable (5), vector network analyzer is connected with test probe (6) by test cable (5), it is characterized in that: shown automatic control testing system controls the transmitting and receiving signal of vector network analyzer, the movement of gantry is synchronous with the launch and accept of signal simultaneously, described test probe (6) is contained on scanning support, scanning support can move on platform, and then the test one by one realized Waveguide slot array antenna (1).
4. Waveguide slot array antenna means for correcting according to claim 3, it is characterized in that: described test probe (6) keeps vertical with Waveguide slot array antenna (1), and the spacing between test probe (6) and Waveguide slot array antenna (1) should be less than 3mm.
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| CN201510509282.2A CN105158768B (en) | 2015-08-19 | 2015-08-19 | A kind of Waveguide slot array antenna means for correcting and bearing calibration |
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| CN201510509282.2A CN105158768B (en) | 2015-08-19 | 2015-08-19 | A kind of Waveguide slot array antenna means for correcting and bearing calibration |
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| CN106990394A (en) * | 2017-02-27 | 2017-07-28 | 中国电子科技集团公司第二十七研究所 | A kind of calibration of amplitude and phase method of antenna element in plane or cylinder phased-array radar |
| CN107561374A (en) * | 2017-07-03 | 2018-01-09 | 北京遥测技术研究所 | A kind of phased array antenna automatization test system and method for testing |
| CN108872735A (en) * | 2018-04-27 | 2018-11-23 | 成都西科微波通讯有限公司 | Radio frequency applied to active phase array antenna vector modulator mentions number system and method |
| CN109541558A (en) * | 2018-09-30 | 2019-03-29 | 航天恒星科技有限公司 | A kind of calibration method of whole process total system Active Phase-Array Radar target seeker |
| CN109839543A (en) * | 2017-11-29 | 2019-06-04 | 南京捷希科技有限公司 | A kind of the amplitude-phase consistency test macro and test method of antenna |
| 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 |
| CN112103652A (en) * | 2020-08-11 | 2020-12-18 | 星展测控科技股份有限公司 | Double-path waveguide phase matching device |
| CN112816961A (en) * | 2021-03-17 | 2021-05-18 | 中国人民解放军海军潜艇学院 | Ku wave band phased array water surface target detection system with self-adaptive wave beam stabilization |
| CN115865231A (en) * | 2022-11-25 | 2023-03-28 | 中国电子科技集团公司第二十九研究所 | Channel correction method for instantaneous broadband receiving phased array system |
| WO2024060040A1 (en) * | 2022-09-20 | 2024-03-28 | 京东方科技集团股份有限公司 | Single-channel test device and system, and test method |
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| 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 |
| CN112103652A (en) * | 2020-08-11 | 2020-12-18 | 星展测控科技股份有限公司 | Double-path waveguide phase matching device |
| CN112103652B (en) * | 2020-08-11 | 2024-02-06 | 星展测控科技股份有限公司 | Double-path waveguide phase matching device |
| CN112816961A (en) * | 2021-03-17 | 2021-05-18 | 中国人民解放军海军潜艇学院 | Ku wave band phased array water surface target detection system with self-adaptive wave beam stabilization |
| WO2024060040A1 (en) * | 2022-09-20 | 2024-03-28 | 京东方科技集团股份有限公司 | Single-channel test device and system, and test method |
| CN115865231A (en) * | 2022-11-25 | 2023-03-28 | 中国电子科技集团公司第二十九研究所 | Channel correction method for instantaneous broadband receiving phased array system |
| CN115865231B (en) * | 2022-11-25 | 2024-04-05 | 中国电子科技集团公司第二十九研究所 | Channel correction method for instantaneous broadband receiving phased array system |
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