CN101957444B - Multichannel radar amplitude and phase automatic correcting method and device - Google Patents

Multichannel radar amplitude and phase automatic correcting method and device Download PDF

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CN101957444B
CN101957444B CN2010102972122A CN201010297212A CN101957444B CN 101957444 B CN101957444 B CN 101957444B CN 2010102972122 A CN2010102972122 A CN 2010102972122A CN 201010297212 A CN201010297212 A CN 201010297212A CN 101957444 B CN101957444 B CN 101957444B
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road
amplitude
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target echo
feed
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CN101957444A (en
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徐洪林
吴海
徐朝阳
刘国华
陈永森
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NO 723 RESEARCH INSTITUTE OF CHINA SHIPBUILDING INDUSTRY Corp
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Abstract

The invention discloses multichannel radar amplitude and phase automatic correcting method and device. The method comprises the following steps of: before a radar system works, respectively feeding the same radio frequency test signal into various receiving channels of a multichannel radar system by a feed source to obtain the phase characteristic and the amplitude characteristic of various receiving channels; calculating a phase difference and an amplitude specific value between other channel signals and a reference signal by using one of channel signals as a reference signal; and then enabling the radar system to work, carrying out automatic correction on target echoes of all the channels by utilizing the obtained phase difference and the amplitude specific value so as to ensure the consistency of all the channels on amplitudes and phases. When a transmission frequency point is changed or a radar working environment is changed, the amplitude and phase characteristics of the receiving channels are unavoidably changed; and the invention can accurately and conveniently measure and correct the change of the amplitude and phase characteristic and ensure the consistency of all the channels, thereby expanding the working frequency range and the environmental adaptability of radar and improving the maintainability of the radar.

Description

Automatic mutually bearing calibration of the hyperchannel radar width of cloth and device
Technical field
The present invention relates to the Radar Technology field, be specifically related to amplitude and the automatic bearing calibration of phase place and the device of hyperchannel radar.
Background technology
What monopulse tracking radar required receiving system requires to have strict phase place and amplitude consistance with three receiving cables such as road, gun parallax road and elevation difference roads in the radar working frequency range; In actual engineering; Because the difference of components and parts and transmission line must compensate and adjust the phase place and the amplitude of these three passages.
The at present domestic bearing calibration of generally adopting is to be utilized in the antenna far field to set up signal source and test one by one; Feeder line length according to test result adjustment high frequency and intermediate frequency end; This method be easy to realize and cost lower, but need test to each frequency, revise feeder line length then.After frequency range changes, need test again to revise feeder line length, therefore can not be applicable to broadband system, there is the shortcoming that environment is poor for applicability, be difficult to real-time calibration, inconvenient operation and maintenance.
Summary of the invention
In view of this, the objective of the invention is to through phase place between each passage of radar and amplitude difference are carried out from NMO correction, the performance variation that reduces receiving cable improves the self-detectability of receiving system to the radar system Effect on Performance; Improve the working band scope and the environmental suitability of radar, realize the ease for use and the maintainability of system.
The technical solution that realizes the object of the invention is:
A kind of hyperchannel radar width of cloth is bearing calibration automatically mutually, comprises the steps:
The first step, at automatic correcting state, radar system is not worked, and produces the radio frequency testing signal feed-in feed of frequency and amplitude stabilization;
In second step, the radio frequency testing signal is through feed generation and road, gun parallax road and elevation difference Lu Gongsan road signal, and three road signals are respectively through the processing of receiver, analog to digital converter ADC and digital down converter;
The 3rd step in three road signals after processing, was a reference signal with one road signal S1 wherein, utilized phase detector to obtain other two paths of signals S2, the S3 phase differential with respect to reference signal, i.e. Δ 12=θ 1-θ 2 and Δ 13=θ 1-θ 3; Utilize amplitude detector to obtain S2, S3 two paths of signals amplitude ratio, promptly with respect to S1 road signal
Figure BSA00000289997100021
With
Figure BSA00000289997100022
Wherein, θ 1, θ 2 and θ 3 are respectively the phase place of S1, S2 and S3 drive test trial signal, A 1, B 2And B 3Be respectively the amplitude of S1, S2 and S3 drive test trial signal; Store the data of each phase differential and each amplitude ratio;
The 4th step made radar system get into duty, received and the processing target echo; According to phase differential and the amplitude ratio of storage, the data of three road target echo signals of feed generation to be revised, modification method is following:
S2 road target echo is multiplied by the amplitude correction factor With phase place correction factor exp (j Δ 12); S3 road target echo is multiplied by the amplitude correction factor
Figure BSA00000289997100024
With phase place correction factor exp (j Δ 13);
Figure BSA00000289997100025
Figure BSA00000289997100026
Wherein, A ' 1, B ' 2And B ' 3Be respectively the amplitude of S1, S2 and S3 road target echo;
In the 5th step, when transmit frequency range changes perhaps working environment variation, repeat above step 1 to four.
Wherein, Exist the radio frequency testing signal generation device to radio frequency signal channels between the feed and corresponding switch; Under test mode, the signal Processing extension set is sent to the radio frequency testing signal generation device with control information, and the radio frequency testing signal generation device produces the radio frequency testing signal in view of the above; Test signal generates multiple signals through switch feed-in feed through receiving system; Under the radar duty, cut-off switch guarantees the operate as normal of radar; When transmit frequency range changed, the radio frequency testing signal was done corresponding change according to signal Processing order.
Preferably, establish reference signal for the road signal, then:
The 3rd step comprised: with the road signal be reference signal, utilize phase detector obtain gun parallax road and trim road with respect to the phase differential of road signal, i.e. Δ A=θ ∑-θ Δ A, Δ E=θ ∑-θ Δ EUtilize amplitude detector obtain gun parallax road and trim road with respect to the amplitude ratio of road signal, promptly
Figure BSA00000289997100027
With
Figure BSA00000289997100028
Wherein, A ∑, B Δ AAnd B Δ EThe signal amplitude on expression and road, gun parallax road and trim road respectively, θ ∑, θ Δ AAnd θ Δ EBe respectively phase place with road, gun parallax road and trim road signal; Store the data of each phase differential and each amplitude ratio;
The modification method in said the 4th step comprises:
Gun parallax road target echo is multiplied by the amplitude correction factor With phase place correction factor exp (j Δ A); Trim road target echo is multiplied by the amplitude correction factor
Figure BSA00000289997100032
With phase place correction factor exp (j Δ E);
Figure BSA00000289997100034
Wherein, A ' ∑, B ' Δ AAnd B ' Δ EThe target echo signal amplitude on expression and road, gun parallax road and trim road respectively.
A kind of hyperchannel radar width of cloth phase automatic correction device comprises: frequency synthesizer, CS, feed, three tunnel treatment channel, angle error computing unit, amplitude computing unit, parameter storage unit and data correction unit; Each treatment channel comprises receiver, ADC, the digital down converter that order links to each other, and receiver connects feed, and digital down converter connects switch; The position 1 joint angle error calculation unit and the amplitude computing unit of switch, the position 2 of switch connects the data amending unit;
Under automatic correcting state, radar system is not worked, and connects CS, and the frequency that frequency synthesizer produces and the radio frequency testing signal of amplitude stabilization are through CS feed-in feed; Feed generation and road, gun parallax road and elevation difference Lu Gongsan drive test trial signal, three drive test trial signals get into three treatment channel respectively, and frequency synthesizer also provides the coherent local oscillator for receiver, digital down converter;
At this moment, the switch of three treatment channel is received position 1, and the three drive test trial signals that treated passage is handled are through switch entering angle error calculation unit and amplitude computing unit;
The angle error computing unit is a reference signal with one road signal S1 wherein, utilizes phase detector to obtain other two paths of signals S2, the S3 phase differential with respect to reference signal, i.e. Δ 12=θ 1-θ 2 and Δ 13=θ 1-θ 3, and send to the parameter storage unit storage; Wherein, θ 1, θ 2 and θ 3 are respectively the phase place of S1, S2 and S3 drive test trial signal;
The amplitude computing unit utilizes amplitude detector to obtain S2, the S3 two paths of signals amplitude ratio with respect to S1 road signal, promptly
Figure BSA00000289997100041
With And send to parameter storage unit storage; Wherein, A 1, B 2And B 3Be respectively the amplitude of S1, S2 and S3 drive test trial signal;
Break off CS, make radar system get into duty, target echo is through feed generation and road, gun parallax road and elevation difference Lu Gongsan road target echo signal, and three road target echo signals get into three treatment channel respectively;
At this moment, the switch of three treatment channel is received position 2, and three road target echo signals that treated passage is handled get into the data correction unit through switch;
The data correction unit is revised three road target echo signals according to the phase differential and the amplitude ratio of parameter storage unit storage, and modification method is following:
S2 road target echo is multiplied by the amplitude correction factor
Figure BSA00000289997100043
With phase place correction factor exp (j Δ 12); S3 road target echo is multiplied by the amplitude correction factor
Figure BSA00000289997100044
With phase place correction factor exp (j Δ 13);
Figure BSA00000289997100045
Figure BSA00000289997100046
Wherein, A ' 1, B ' 2And B ' 3Be respectively the amplitude of S1, S2 and S3 road target echo;
When transmit frequency range changed perhaps working environment variation, each component units repeated above operation.
The present invention compared with prior art, its remarkable result is:
(1) the present invention does not utilize feeder line, but adopts the mode of software correction to guarantee each channel signal consistent on amplitude and phase place, and the performance variation that reduces receiving cable is to the radar system Effect on Performance, the self-detectability of raising receiving system.
(2) realize test and the robotization of proofreading and correct, shorten the test process time, reduce difficulty of test.
(3) when the emission frequency changes perhaps radar operating environment variation; The magnitude-phase characteristics of receiving cable inevitably changes; Utilize the present invention to measure and to revise its variation accurately and conveniently; Guarantee the consistance of each passage, expanded the operating frequency range and the environmental suitability of radar, conventional method is difficult to realize.
(4) the test trimming process is simple, and the environment applicability is preferable, can real-time calibration, and make things convenient for operation and maintenance, improved the maintenanceability of hyperchannel radar system.
This automatic test has been used for radar with bearing calibration and has newly ground equipment.
Description of drawings
Fig. 1 is the structural representation of automatic correction device of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
There are at least three receiving cables in monopulse tracking radar, departs from the axial angle of radar in order to obtain target, and receiving system must guarantee in full frequency band and the phase place on road, gun parallax road and elevation difference road and the comparatively strict consistance of amplitude characteristic maintenance.
Therefore; The invention provides the bearing calibration automatically mutually of a kind of hyperchannel radar width of cloth; Its basic thought is: before the radar system work, same radio frequency testing signal in each receiving cable of feed difference feed-in hyperchannel radar system, is obtained the phase propetry and the amplitude characteristic of each receiving cable; With one of them channel signal is reference signal, calculates signal and the phase differential between the reference signal and the amplitude ratio of other passages; Make radar system work then, the phase differential and the amplitude ratio that obtain before utilizing are revised the target echo of each passage automatically, guarantee the consistance of each passage on amplitude and phase place.When transmit frequency range changes perhaps working environment variation, repeat above step and get final product.
It is thus clear that the present invention does not utilize feeder line, but adopt the mode of software correction to guarantee each channel signal consistent on amplitude and phase place.Again test process is simple after frequency range changes, and be applicable to broadband system, and the environment applicability is preferable, can real-time calibration, and make things convenient for operation and maintenance.
Specifically, the automatic mutually bearing calibration of this hyperchannel radar width of cloth comprises the steps:
The first step, at automatic correcting state, radar system is not worked, the outside radio frequency testing signal feed-in feed that produces frequency and amplitude stabilization.
In second step, the radio frequency testing signal is through feed generation and road, gun parallax road and elevation difference Lu Gongsan road signal, and three road signals are respectively through the processing of receiver, analog to digital converter (ADC) and digital down converter.
The 3rd step in three road signals after processing, was a reference signal with one road signal S1 wherein, utilized phase detector to obtain other two paths of signals S2, the S3 phase differential with respect to reference signal, i.e. Δ 12=θ 1-θ 2 and Δ 13=θ 1-θ 3; Utilize amplitude detector to obtain S2, S3 two paths of signals amplitude ratio, promptly with respect to S1 road signal
Figure BSA00000289997100061
With
Figure BSA00000289997100062
Wherein, θ 1, θ 2 and θ 3 are respectively the phase place of S1, S2 and S3 drive test trial signal; A 1, B 2And B 3Be respectively the amplitude of S1, S2 and S3 drive test trial signal; Store the data of each phase differential and each amplitude ratio.
The 4th step made radar system get into duty, received and the processing target echo; According to phase differential and the amplitude ratio of storage, the data of three road target echo signals of feed generation are revised, the phase place of each passage is consistent, amplitude ratio is consistent with theoretical value; Modification method is following:
S2 road target echo is multiplied by the amplitude correction factor
Figure BSA00000289997100063
With phase place correction factor exp (j Δ 12); S3 road target echo is multiplied by the amplitude correction factor
Figure BSA00000289997100064
With phase place correction factor exp (j Δ 13);
Figure BSA00000289997100065
Figure BSA00000289997100066
Wherein, A ' 1, B ' 2And B ' 3Be respectively the amplitude of S1, S2 and S3 road target echo.
In the 5th step, when transmit frequency range changes perhaps working environment variation, repeat above step 1 to four.
So far, this flow process finishes.
Wherein, reference signal can for road, gun parallax road and elevation difference road in any one the tunnel.Below with reference signal can for the road be example, specifically describe a kind of automatic correction device of realizing said method.
As shown in Figure 1, this device comprises: frequency synthesizer, CS, feed, three tunnel treatment channel, angle error computing unit, amplitude computing unit, parameter storage unit and data correction unit; Each treatment channel comprises receiver, ADC and the digital down converter that order links to each other.Receiver connects feed, and digital down converter connects switch; The position 1 joint angle error calculation unit and the amplitude computing unit of switch, the position 2 of switch connects the data amending unit.
The state of CS is controlled by signal Processing, is used for the switching between test mode and the normal operating conditions.
Under automatic correcting state, radar system is not worked, and connects CS, and the frequency that frequency synthesizer produces and the radio frequency testing signal of amplitude stabilization are through CS feed-in feed; Feed generation and road, gun parallax road and elevation difference Lu Gongsan drive test trial signal, three drive test trial signals get into three treatment channel respectively, and frequency synthesizer also provides the coherent local oscillator for receiver, digital down converter.
At this moment, the switch 1～3 of three treatment channel is received position 1, and this switch can be by software control, and the three drive test trial signals that treated passage is handled are through switch entering angle error calculation unit and amplitude computing unit.
The signal of No. three receivers output has following form:
s ∑＝A ∑exp[j(ω It+θ ∑)]；
s ΔA＝B ΔAexp[j(ω It+θ ΔA)]；
s ΔE＝B ΔEexp[j(ω It+θ ΔE)]；
A wherein ∑, B Δ AAnd B Δ EThe signal amplitude on expression and road, gun parallax road and trim road can be obtained by amplitude detector respectively; θ ∑, θ Δ AAnd θ Δ EBe respectively the phase place with road, gun parallax road and trim road signal, can obtain by phase detector; ω IBe IF-FRE.
The angular error computing unit, with the road signal be reference signal, utilize phase detector obtain gun parallax road signal with respect to the phase differential of road signal, i.e. Δ A=θ ∑-θ Δ A, and trim road signal with respect to the phase differential of road signal, i.e. Δ E=θ ∑-θ Δ E, and result of calculation is transferred to parameter storage unit store.
The amplitude computing unit; With with the road signal be reference signal; Utilize amplitude detector obtain gun parallax road signal with respect to the amplitude ratio of road signal; Promptly and trim road signal with respect to the amplitude ratio of road signal, i.e.
Figure BSA00000289997100072
and result of calculation is transferred to parameter storage unit store.
In the radar system normal operating conditions; CS breaks off; Switch 1～3 is received position 2 simultaneously, and target echo is through feed generation and road, gun parallax road and elevation difference Lu Gongsan road target echo signal, and three road target echo signals get into three treatment channel respectively.
Feed receiving target echoed signal has following form:
s′ ∑＝A′ ∑exp[j(ω dt+θ′ ∑)]
s′ ΔA＝B′ ΔAexp[j(ω dt+θ′ ΔA)]
s′ ΔE＝B′ ΔEexp[j(ω dt+θ′ ΔE)]
A ' wherein ∑, B ' Δ AAnd B ' Δ EThe target echo signal amplitude on expression and road, gun parallax road and trim road respectively, θ ' ∑, θ ' Δ AAnd θ ' Δ EBe respectively the phase place with road, gun parallax road and trim road target echo signal, ω dIntermediate-freuqncy signal frequency for superposition target Doppler.
After get into the data correction unit by switch, revise target echo signal according to the data of parameter storage unit stored by the data correction unit through the processing of receiver, ADC and digital down converter for signal.Modification method is following:
With with the road signal be benchmark, to correction factor on gun parallax road and the trim road signal times, revised gun parallax road and trim road signal are respectively:
s ΔA ′ ′ = k A ′ k A exp ( j Δ A ) · B ΔA ′ exp [ j ( ω d t + θ ΔA ′ ) ]
s ΔE ′ ′ = k E ′ k E exp ( j Δ E ) · B ΔE ′ exp [ j ( ω d t + θ ΔE ′ ) ]
Wherein,
Figure BSA00000289997100083
Be gun parallax road amplitude correction factor,
Figure BSA00000289997100084
Be trim road amplitude correction factor,
Figure BSA00000289997100085
Figure BSA00000289997100086
The orientation sampled data is multiplied by exp (j Δ A) its phase place is revised, the pitching sampled data is multiplied by exp (j Δ E) its phase place is revised.Revised data are issued the intermediate-frequency receiver of rear end.
When transmit frequency range changes perhaps working environment variation, cause each channel phases sum of errors range error to change, need revise once more it, need switch to test mode this moment, and system repeats above step automatically and revises automatically.
In sum, more than being merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (4)

1. hyperchannel radar width of cloth bearing calibration automatically mutually is characterized in that step is following:
The first step, at automatic correcting state, radar system is not worked, and produces the radio frequency testing signal feed-in feed of frequency and amplitude stabilization;
In second step, the radio frequency testing signal is through feed generation and road, gun parallax road and elevation difference Lu Gongsan road signal, and three road signals are respectively through the processing of receiver, analog to digital converter ADC and digital down converter;
The 3rd step in three road signals after processing, was a reference signal with one road signal S1 wherein, utilized phase detector to obtain other two paths of signals S2, the S3 phase differential with respect to reference signal, i.e. Δ 12=θ 1-θ 2 and Δ 13=θ 1-θ 3; Utilize amplitude detector to obtain S2, S3 two paths of signals amplitude ratio, promptly with respect to S1 road signal With
Figure FDA0000156684840000012
Wherein, θ 1, θ 2 and θ 3 are respectively the phase place of S1, S2 and S3 drive test trial signal, A 1, B 2And B 3Be respectively the amplitude of S1, S2 and S3 drive test trial signal; Store the data of each phase differential and each amplitude ratio;
The 4th step made radar system get into duty, received and the processing target echo; According to phase differential and the amplitude ratio of storage, the data of three road target echo signals of feed generation to be revised, modification method is following:
S2 road target echo is multiplied by the amplitude correction factor
Figure FDA0000156684840000013
With phase place correction factor exp (j Δ 12); S3 road target echo is multiplied by the amplitude correction factor
Figure FDA0000156684840000014
With phase place correction factor exp (j Δ 13);
Figure FDA0000156684840000015
Wherein, A ' 1, B ' 2And B ' 3Be respectively the amplitude of S1, S2 and S3 road target echo;
In the 5th step, when transmit frequency range changes perhaps working environment variation, repeat above step 1 to four.
2. the hyperchannel radar width of cloth according to claim 1 is bearing calibration automatically mutually; It is characterized in that: exist the radio frequency testing signal generation device to radio frequency signal channels between the feed and corresponding switch; Under test mode, the signal Processing extension set is sent to the radio frequency testing signal generation device with control information, and the radio frequency testing signal generation device produces the radio frequency testing signal in view of the above; Test signal generates multiple signals through switch feed-in feed through receiving system; Under the radar duty, cut-off switch guarantees the operate as normal of radar; When transmit frequency range changed, the radio frequency testing signal was done corresponding change according to signal Processing order.
3. the hyperchannel radar width of cloth according to claim 1 is bearing calibration automatically mutually, it is characterized in that: establishing reference signal is and the road signal, then:
The 3rd step comprised: with the road signal be reference signal, utilize phase detector obtain gun parallax road and elevation difference road with respect to the phase differential of road signal, i.e. Δ A=θ ∑-θ Δ A, Δ E=θ ∑-θ Δ EUtilize amplitude detector obtain gun parallax road and elevation difference road with respect to the amplitude ratio of road signal, promptly
Figure FDA0000156684840000021
With
Figure FDA0000156684840000022
Wherein, A ∑, B Δ AAnd B Δ EThe signal amplitude on expression and road, gun parallax road and elevation difference road respectively, θ ∑, θ Δ AAnd θ Δ EBe respectively phase place with road, gun parallax road and elevation difference road signal; Store the data of each phase differential and each amplitude ratio;
The modification method in said the 4th step comprises:
Gun parallax road target echo is multiplied by the amplitude correction factor
Figure FDA0000156684840000023
With phase place correction factor exp (j Δ A); Elevation difference road target echo is multiplied by the amplitude correction factor
Figure FDA0000156684840000024
With phase place correction factor exp (j Δ E);
Figure FDA0000156684840000026
Wherein, A ' ∑, B ' Δ AAnd B ' Δ EThe target echo signal amplitude on expression and road, gun parallax road and elevation difference road respectively.
4. a hyperchannel radar width of cloth phase automatic correction device is characterized in that, comprising: frequency synthesizer, CS, feed, three tunnel treatment channel, angle error computing unit, amplitude computing unit, parameter storage unit and data correction unit; Each treatment channel comprises receiver, ADC and the digital down converter that order links to each other, and receiver connects feed, and digital down converter connects switch; The position 1 joint angle error calculation unit and the amplitude computing unit of switch, the position 2 of switch connects the data amending unit;
Under automatic correcting state, radar system is not worked, and connects CS, and the switch of three treatment channel is received position 1;
At this moment, the radio frequency testing signal of the frequency of frequency synthesizer generation and amplitude stabilization is through CS feed-in feed; Feed generation and road, gun parallax road and elevation difference Lu Gongsan drive test trial signal, three drive test trial signals get into respectively after three treatment channel handle, through switch entering angle error calculation unit and amplitude computing unit;
The angle error computing unit is a reference signal with one road signal S1 wherein, utilizes phase detector to obtain other two paths of signals S2, the S3 phase differential with respect to reference signal, i.e. Δ 12=θ 1-θ 2 and Δ 13=θ 1-θ 3, and send to the parameter storage unit storage; Wherein, θ 1, θ 2 and θ 3 are respectively the phase place of S1, S2 and S3 drive test trial signal;
The amplitude computing unit utilizes amplitude detector to obtain S2, the S3 two paths of signals amplitude ratio with respect to S1 road signal, promptly
Figure FDA0000156684840000031
With
Figure FDA0000156684840000032
And send to parameter storage unit storage; Wherein, A 1, B 2And B 3Be respectively the amplitude of S1, S2 and S3 drive test trial signal;
Make radar system get into duty, break off CS, the switch of three treatment channel is received position 2;
At this moment, target echo is through feed generation and road, gun parallax road and elevation difference Lu Gongsan road target echo signal, and three road target echo signals get into respectively after three treatment channel handle, through switch entering data correction unit;
The data correction unit is revised three road target echo signals according to the phase differential and the amplitude ratio of parameter storage unit storage, and modification method is following:
S2 road target echo is multiplied by the amplitude correction factor With phase place correction factor exp (j Δ 12); S3 road target echo is multiplied by the amplitude correction factor
Figure FDA0000156684840000034
With phase place correction factor exp (j Δ 13);
Figure FDA0000156684840000035
Figure FDA0000156684840000036
Wherein, A ' 1, B ' 2And B ' 3Be respectively the amplitude of S1, S2 and S3 road target echo;
When transmit frequency range changed perhaps working environment variation, each component units repeated above operation.
CN2010102972122A 2010-09-30 2010-09-30 Multichannel radar amplitude and phase automatic correcting method and device Expired - Fee Related CN101957444B (en)

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CN108196235B (en) * 2018-02-08 2021-04-27 北京理工大学 Amplitude-phase calibration method for multichannel millimeter wave radar
CN108614247A (en) * 2018-04-03 2018-10-02 四川九洲电器集团有限责任公司 A kind of secondary radar channel calibration method
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CN113406585A (en) * 2021-07-01 2021-09-17 四川九洲电器集团有限责任公司 Dynamic target simulator and phased array system
CN113395127B (en) * 2021-07-13 2022-03-18 伟乐视讯科技股份有限公司 Emergency broadcast RDS modulation degree test method and system
CN115567125B (en) * 2022-09-28 2023-12-08 中国电子科技集团公司第十四研究所 Method and device for multi-channel calibration and signal coherent recovery of broadband channelized reception

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6670907B2 (en) * 2002-01-30 2003-12-30 Raytheon Company Efficient phase correction scheme for range migration algorithm
CN1746870A (en) * 2005-07-15 2006-03-15 中国船舶重工集团公司第七○九研究所 Flash array storage method and module for real-time data record in digital signal processor
CN101666874A (en) * 2009-09-07 2010-03-10 北京科技大学 Measuring device for accurate correction by FMCW radar distance measurement and compensation correction method
CN101770022A (en) * 2009-12-30 2010-07-07 南京航空航天大学 Multiple input multiple output (MIMO) radar array position error self-correcting method based on genetic algorithm

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6670907B2 (en) * 2002-01-30 2003-12-30 Raytheon Company Efficient phase correction scheme for range migration algorithm
CN1746870A (en) * 2005-07-15 2006-03-15 中国船舶重工集团公司第七○九研究所 Flash array storage method and module for real-time data record in digital signal processor
CN101666874A (en) * 2009-09-07 2010-03-10 北京科技大学 Measuring device for accurate correction by FMCW radar distance measurement and compensation correction method
CN101770022A (en) * 2009-12-30 2010-07-07 南京航空航天大学 Multiple input multiple output (MIMO) radar array position error self-correcting method based on genetic algorithm

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
左平.有源相控阵雷达多通道幅相校准研究.《现代雷达》.2009,第31卷(第10期),第14-16页. *
康士峰等.机载杂波测量雷达的有源绝对校准技术研究.《电子学报》.2000,第28卷(第12期),第25-28页. *

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