CN112379341A - Digital modeling method of radar receiver - Google Patents

Digital modeling method of radar receiver Download PDF

Info

Publication number
CN112379341A
CN112379341A CN202011201816.2A CN202011201816A CN112379341A CN 112379341 A CN112379341 A CN 112379341A CN 202011201816 A CN202011201816 A CN 202011201816A CN 112379341 A CN112379341 A CN 112379341A
Authority
CN
China
Prior art keywords
clutter
echo
parameter
parameters
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011201816.2A
Other languages
Chinese (zh)
Other versions
CN112379341B (en
Inventor
卢冀
李万玉
强勇
肖秋
肖开健
游俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xi'an Changyuan Electron Engineering Co ltd
Xian Electronic Engineering Research Institute
Original Assignee
Xian Electronic Engineering Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xian Electronic Engineering Research Institute filed Critical Xian Electronic Engineering Research Institute
Priority to CN202011201816.2A priority Critical patent/CN112379341B/en
Publication of CN112379341A publication Critical patent/CN112379341A/en
Application granted granted Critical
Publication of CN112379341B publication Critical patent/CN112379341B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • G01S7/4021—Means for monitoring or calibrating of parts of a radar system of receivers
    • 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
    • G01S7/4052—Means for monitoring or calibrating by simulation of echoes
    • 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
    • G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
    • G01S7/418—Theoretical aspects
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2111/00—Details relating to CAD techniques
    • G06F2111/10—Numerical modelling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

The invention relates to a digital modeling method of a radar receiver, belonging to the technical field of digital modeling and simulation of radars. The method comprises the following steps: processing the target, the clutter and the electronic interference echo parameters to respectively generate a target echo comprehensive parameter, a clutter echo comprehensive parameter and an electronic interference echo comprehensive parameter; processing the comprehensive parameters of the target, the clutter and the electronic interference echo to respectively generate sum signal parameters comprising the target and signal parameters, the clutter and signal parameters and the electronic interference and signal parameters; and carrying out amplitude control on the sum signal parameter, the azimuth difference signal parameter and the pitch difference signal to generate an amplitude control sum signal parameter comprising an amplitude control target sum signal parameter, an amplitude control clutter sum signal parameter and an amplitude control electronic interference sum signal parameter. The method is suitable for the digital modeling and simulation of the radar and is used for the digital modeling of the radar receiver.

Description

Digital modeling method of radar receiver
Technical Field
The invention belongs to the technical field of radar digital modeling and simulation, and particularly relates to a method for constructing a radar receiver mathematical model according to radar receiver functions.
Background
The radar digital modeling and simulation adopts a mathematical modeling method to construct a radar, target, clutter, electronic interference and electromagnetic environment model, then adopts a mathematical simulation method to simulate the interaction of the radar, the target, the clutter, the electronic interference and the electromagnetic environment in a set working flow and environment, simulate the whole process of generation, emission, transmission, echo and processing of radar waveform parameters, test and optimize the design elements of the radar, verify and evaluate the radar function, performance and even operational efficiency, and effectively improve the applicability of the full life cycle function of a product and the development efficiency of radar products. The radar digital modeling and simulation construct a radar physical entity and a radar use time-space scene through a digital means, and the simulation obtains an interaction result between the entity and the scene, and the essence of the radar digital modeling and simulation is the core technology of a physical information system in the discussions of 'industry 4.0' and 'China manufacturing 2025'. The digital modeling and simulation of radar bridges the product real object and design concept through the digital modeling and simulation technology, and has become the focus of the development and competition of the current radar technology.
Along with the progress of radar technology and the improvement of the complexity of a combat environment, the requirements of radar target detection, clutter processing, anti-interference function and performance are more and more clear, the radar function, process and algorithm design become a core technology for generating high added value of radar products, correspondingly, the radar digital modeling and simulation tend to become one of the most valuable technical means in radar design, development and use.
The radar model is an indispensable component in the digital modeling and simulation of the radar, the quality of the radar model directly affects the effect and the level of the evaluation of a digital system, the radar mainly comprises an antenna, a transmitter, a receiver and a signal processor, the radar receiver is one of important components of the radar and mainly completes the conversion from a signal received by the radar antenna to a signal required by the radar signal processor, however, the digital modeling of the radar is a program operated on a computer, the digital modeling and simulation are basically based on discrete data processing, aiming at the signal conversion function from the antenna of the radar receiver to the signal processor, the effective method of the digital modeling is to process waveform parameters instead of waveform sampling values, therefore, according to the function of the radar receiver, the digital model of the radar receiver processes the waveform parameters of the received signal obtained by the antenna, and generating signal waveform parameters meeting the requirements of the radar signal processor.
Disclosure of Invention
Technical problem to be solved
The method aims to solve the problem of mathematical modeling of the radar receiver in the radar digital modeling and simulation technology. Aiming at the construction of a radar model for radar digital modeling and simulation, a radar receiver mathematical modeling method based on echo channelization is provided. The method fully considers the radar echo of the target, the clutter and the electronic interference, and generates radar waveform parameters required by a radar signal processor according to the function of a radar receiver. The method is suitable for the digital modeling and simulation of the radar and is used for the digital modeling of the radar receiver.
Technical scheme
1) The channelized processing module of the radar receiver mathematical model receives the target, the clutter and the electronic interference echo parameters from the target, the clutter and the electronic interference echo channels respectively, converts the target, the clutter and the electronic interference echo parameters into target, clutter and electronic interference echo comprehensive parameters, and sends the target, the clutter and the electronic interference echo comprehensive parameters to the sum channel processing module. The echo parameters include power, frequency, phase, azimuth, pitch and time delay, respectively described as Px，fx，px，θx，
Figure BDA0002755585330000021
And dxThe echo comprehensive parameters include signal, comprehensive frequency, azimuth arrival angle, elevation arrival angle and signal comprehensive time delay, which are respectively described as Sx，Fx，Θx，ΦxAnd DxWhere x ═ t, c, i denote the parameters of echoes, clutter, and electronic interference, respectively. Then, SxIs composed of
Figure BDA0002755585330000022
In general, the receiver selects the target echo frequency as the center frequency, then FxIs composed of
Fx＝ft (2)
Θx，ΦxThe angle transmitted to the radar is converted into the angle transmitted by the radar, and the range of the azimuth angle and the range of the azimuth arrival angle are defined as [0,2 pi ]]The ranges of pitch angle and azimuth angle of arrival are defined as [ - π/2, π/2]Then, then
Figure BDA0002755585330000031
Figure BDA0002755585330000032
DxValue following dxSame, then
Dx＝dx (5)
2) The sum-difference channel processing module converts the received target, clutter and electronic interference echo comprehensive parameters into sum signal parameters including target and signal parameters, clutter and signal parameters and electronic interference and signal parameters, azimuth difference signal parameters including target azimuth difference signal parameters, clutter azimuth difference signal parameters and electronic interference azimuth difference signal parameters and azimuth difference signal parameters including target elevation difference signalsA number parameter, a clutter pitch difference signal parameter, and a pitch difference signal parameter of an electronic interference pitch difference signal parameter. Setting the sum signal parameter, the azimuth difference signal parameter and the pitch difference signal parameter as ∑ Cx，δAzCxAnd deltaElCxWhere x is t, c, i represents the signal parameters of the echo, clutter, and electronic interference, respectively,
Figure BDA0002755585330000033
Figure BDA0002755585330000034
Figure BDA0002755585330000035
wherein C isxIs calculated as
Figure BDA0002755585330000036
Wherein B isrAnd BnRespectively representing the bandwidth of the radar receiver and the bandwidth of the electronic interference signal, Gε，GδAzAnd GδElRespectively representing the gains of the sum channel, the azimuth difference channel and the elevation difference channel of the beam direction of the radar antenna,
Figure BDA0002755585330000037
and
Figure BDA0002755585330000038
the sum channel, the azimuth channel and the elevation channel respectively representing the beam direction of the radar antenna change in phase, GyAnd
Figure BDA0002755585330000039
Figure BDA00027555853300000310
value following specific antenna type and echo signal azimuth arrival angle thetaxAnd pitch reach angle phixRelated, can be described as
Figure BDA00027555853300000311
Wherein F is azimuth angle and pitch angle theta of radar antenna beamxAnd phixThe antenna pattern in time.
3) The echo dynamic control module converts the received sum signal parameters, the azimuth difference signal parameters and the pitch difference signal parameters into amplitude control sum signal parameters containing amplitude control targets and signal parameters, amplitude control clutter and signal parameters and amplitude control electronic interference and signal parameters, amplitude control azimuth difference signal parameters containing the amplitude control target azimuth difference signal parameters, amplitude control clutter azimuth difference signal parameters and amplitude control electronic interference azimuth difference signal parameters, and amplitude control pitch difference signal parameters containing the amplitude control target pitch difference signal parameters, the amplitude control clutter pitch difference signal parameters and the amplitude control electronic interference pitch difference signal parameters. Setting amplitude control sum signal parameters, amplitude control azimuth difference signal parameters and amplitude control pitch difference signal parameters as
Figure BDA0002755585330000041
And
Figure BDA0002755585330000042
where x is t, c, i represents the amplitude control signal parameters of echo, clutter and electronic interference, respectively, then
Figure BDA0002755585330000043
Figure BDA0002755585330000044
Figure BDA0002755585330000045
Wherein u is an amplitude control parameter and u is
Figure BDA0002755585330000046
Wherein R ismaxAnd RminDenotes the maximum and minimum distance, A, over which amplitude control is performedmaxAnd AminThe unit is dB for maximum and minimum attenuation of amplitude control, n represents the order of the attenuation curve, and n is typically 1,2,3, 4.
Advantageous effects
Compared with the prior art, the digital modeling method of the radar receiver provided by the invention has the following advantages:
1) the digital modeling of the radar receiver is based on classification channels and the same signal waveform description parameters, so that the method is easy to realize by programming, simple and convenient and has small calculated amount;
2) the digital model of the radar receiver fully considers the parameters of targets, clutters and electronic interference echoes, and has comprehensive functions, strong practicability and expansibility.
Drawings
FIG. 1 is a block diagram of a digital modeling implementation of a radar receiver of the present invention
Detailed Description
The invention will now be further described with reference to the following examples and drawings:
the technical scheme of the invention is as follows: under the condition that the received echoes of the radar antenna comprise target echoes, clutter echoes and electronic interference echoes, the acquisition and processing of three echo parameters of the target, the clutter and the electronic interference are realized, parameter description meeting signals required by a radar signal processor is generated, and the mathematical modeling of the radar receiver is completed. At present, signals received by a radar antenna mainly comprise target signals, clutter signals and electronic interference signals, correspondingly, a radar receiver mathematical model considers the target signals, the clutter signals and the electronic interference signals as three independent input channels, echo signals in each channel are described by using the same group of parameters, the group of parameters for describing echoes is power, frequency, phase, azimuth angle, pitch angle and time delay, a channelization parameter preprocessing module in the radar receiver digital model processes the target, the clutter and the electronic interference echo parameters to respectively generate target echo comprehensive parameters, clutter echo comprehensive parameters and electronic interference echo comprehensive parameters, the three comprehensive parameters are also described by using the same group of parameters, and the group of parameters for describing the comprehensive echoes are signals, comprehensive frequency, azimuth arrival angle, elevation arrival angle and comprehensive time delay, and a sum channel processing module in the radar receiver digital model processes the target signals, the clutter echo comprehensive parameters, the azimuth arrival angle, the elevation arrival angle and the electronic interference echo comprehensive parameters, Processing the comprehensive parameters of the clutter and the electronic interference echo, respectively generating a sum signal parameter comprising a target and a signal parameter, a clutter and signal parameter and an electronic interference and signal parameter, a azimuth difference signal parameter comprising a target azimuth difference signal parameter, a clutter azimuth difference signal parameter and an electronic interference azimuth difference signal parameter and a pitch difference signal parameter comprising a target pitch difference signal parameter, a clutter pitch difference signal parameter and an electronic interference pitch difference signal parameter, and a sum signal parameter, the azimuth difference signal parameter and the pitch difference signal parameter are transmitted to an echo dynamic control module, the echo dynamic control module respectively controls the amplitude of the sum signal parameter, the azimuth difference signal parameter and the pitch difference signal to generate an amplitude control sum signal parameter comprising an amplitude control target and a signal parameter, an amplitude control clutter and signal parameter and an amplitude control electronic interference sum signal parameter, and an amplitude control target azimuth difference signal parameter, the amplitude control clutter azimuth difference signal parameter, the amplitude control electronic interference azimuth difference signal parameter, the amplitude control target pitch difference signal parameter, the amplitude control clutter pitch difference signal parameter, the amplitude control sum signal parameter, the amplitude control azimuth difference signal parameter and the amplitude control electronic interference pitch difference signal parameter are used for subsequent processing of the radar signal processor. The block diagram of the implementation of the mathematical model of the radar receiver is shown in fig. 1.
Referring to fig. 1, the digital modeling implementation block diagram of the radar receiver of the present invention is as follows:
in the first step, a channelized processing module of a radar receiver mathematical model receives target work from a target echo channelRate parameter PtFrequency parameter ftPhase parameter ptAzimuthal angle parameter θtPitch angle parameter
Figure BDA0002755585330000061
Delay parameter dtReceiving a clutter power parameter P from a clutter echo channelcFrequency parameter fcPhase parameter pcAzimuthal angle parameter θcPitch angle parameter
Figure BDA0002755585330000062
And a delay parameter dcReceiving an electrical interference power parameter P from an electrical interference echo channeliFrequency parameter fiPhase parameter piAzimuthal angle parameter θiPitch angle parameter
Figure BDA0002755585330000063
And a delay parameter diAnd converting the target echo parameters into target echo comprehensive parameters, i.e. target signal StTarget integrated frequency FtAngle of arrival at target azimuth thetatTarget pitch angle of arrival phitAnd target integrated time delay DtConverting the clutter echo parameters into clutter echo synthesis parameters, i.e. clutter signals ScComplex wave synthetic frequency FcAngle of arrival of clutter azimuth thetacElevation angle of clutter phicSum clutter integrated time delay DcConverting the parameters of the electrical interference echo into the comprehensive parameters of the electrical interference echo, i.e. the electrical interference signal SiFrequency of electronic interference complex FiAngle of arrival theta of the electron interferenceiElectronic interference pitching angle phiiSum clutter integrated time delay DiThen sending the comprehensive parameters of the target, the clutter and the electronic interference echo to a sum-difference channel processing module; secondly, the sum-difference channel processing module converts the received target echo comprehensive parameters into target echo sum signal parameters sigma CtTarget echo azimuth difference signal parameter deltaAzCtAnd target echo pitch difference signal deltaElCtReturning the received clutter back toConversion of wave synthesis parameters into clutter echoes and signal parameters ∑ CcAzimuth difference signal parameter delta of clutter echoAzCcSum clutter echo pitch difference signal deltaElCcConverting the received electric interference echo comprehensive parameters into electric interference echo and signal parameters sigma CiAngular difference signal parameter delta of echo due to electronic interferenceAzCiSum electrical interference echo pitch difference signal deltaElCiAnd will be composed of ∑ Ct，∑CcSum Σ CiA sum signal parameter consisting of deltaAzCt，δAzCcAnd deltaAzCiThe azimuth difference signal parameter composed ofElCt，δElCcAnd deltaElCiThe formed pitch difference signal parameters are sent to an echo dynamic control module; thirdly, the echo dynamic control module converts the received sum signal parameter, azimuth difference signal parameter and pitch difference signal parameter into amplitude control target and signal parameter respectively
Figure BDA0002755585330000064
Amplitude-controlled clutter and signal parameters
Figure BDA0002755585330000065
With amplitude-controlled electronic interference and signal parameters
Figure BDA0002755585330000066
Amplitude control sum signal parameter composed of amplitude control target azimuth difference signal parameter
Figure BDA0002755585330000071
Amplitude-controlled clutter azimuth difference signal parameter
Figure BDA0002755585330000072
Signal parameter of azimuth difference with amplitude control electronic interference
Figure BDA0002755585330000073
Amplitude control azimuth difference signal parameter and amplitude control target pitch difference signal parameter
Figure BDA0002755585330000074
Amplitude-controlled clutter pitch difference signal parameters
Figure BDA0002755585330000075
Amplitude-controlled electronic interference pitch difference signal parameter
Figure BDA0002755585330000076
And forming amplitude control pitching difference signal parameters.
Wherein in a first step, a target, clutter and electron interference echo synthesis parameter S is calculatedx，Fx，Θx，ΦxAnd DxWherein x ═ t, c, i respectively represent echo, clutter, echo comprehensive parameter of electronic interference, specifically do as follows:
Sxis composed of
Figure BDA0002755585330000077
In general, the receiver selects the target echo frequency as the center frequency, then FxIs composed of
Fx＝ft
Θx，ΦxThe angle transmitted to the radar is converted into the angle transmitted by the radar, and the range of the azimuth angle and the range of the azimuth arrival angle are defined as [0,2 pi ]]The ranges of pitch angle and azimuth angle of arrival are defined as [ - π/2, π/2]Then, then
Figure BDA0002755585330000078
Figure BDA0002755585330000079
DxValue following dxSame, then
Dx＝dx
In the second stepTarget, clutter and electronic interference and signal parameter ∑ CxAzimuth difference signal parameter deltaAzCxSum-pitch difference signal parameter deltaElCxWherein x ═ t, c, i respectively represent echo, clutter, signal parameter of electronic interference, specifically do as follows:
Figure BDA00027555853300000710
Figure BDA00027555853300000711
Figure BDA00027555853300000712
wherein C isxIs calculated as
Figure BDA0002755585330000081
Wherein B isrAnd BnRespectively representing the radar receiver bandwidth and the jammer bandwidth, Gε，GδAzAnd GδElThe gains, phi, of the sum channel, azimuth channel and elevation channel, respectively, representing the radar antenna beam directionε，φδAzAnd phiδElThe sum channel, the azimuth channel and the elevation channel respectively representing the beam direction of the radar antenna change in phase, GyAnd phiy(y ═ epsilon, delta Az, delta El) values follow specific antenna types and echo signal azimuth arrival angle thetaxAnd pitch reach angle phixRelated, can be described as
Figure BDA0002755585330000082
Wherein F is azimuth angle and pitch angle theta of radar antenna beamxAnd phixThe antenna pattern in time.
In a third step, the amplitude control and signal parameters of the target, clutter and electronic interference signals are calculated
Figure BDA0002755585330000083
Amplitude-controlled azimuth difference signal parameter
Figure BDA0002755585330000084
Sum amplitude control pitch difference signal parameter
Figure BDA0002755585330000085
Wherein x ═ t, c, i respectively represent echo, clutter, electronic interference's amplitude and control signal parameter, specifically the way is as follows:
Figure BDA0002755585330000086
Figure BDA0002755585330000087
Figure BDA0002755585330000088
wherein u is an amplitude control parameter and u is
Figure BDA0002755585330000089
Wherein R ismaxAnd RminDenotes the maximum and minimum distance, A, over which amplitude control is performedmaxAnd AminThe unit is dB for maximum and minimum attenuation of amplitude control, n represents the order of the attenuation curve, and n is typically 1,2,3, 4.

Claims (2)

1. A digital modeling method of a radar receiver is characterized by comprising the following steps:
step 1: according to the parameters of the target, the clutter and the electronic interference echo: power PxFrequency fxPhase pxAzimuth angle thetaxAngle of pitch
Figure FDA0002755585320000011
And a time delay dxAnd calculating comprehensive parameters of the target, the clutter and the electronic interference echo: signal SxComplex frequency FxAngle of arrival in azimuth thetaxPitching angle phixSum signal integrated time delay DxWherein x ═ t, c, i respectively represent echo, clutter, echo comprehensive parameter of electronic interference, specifically do as follows:
Figure FDA0002755585320000012
Fx＝ft
Figure FDA0002755585320000013
Figure FDA0002755585320000014
Dx＝dx
step 2: calculating target, clutter and electrical interference and signal parameters ∑ CxAzimuth difference signal parameter deltaAzCxSum-pitch difference signal parameter deltaElCxWherein x ═ t, c, i respectively represent echo, clutter, signal parameter of electronic interference, specifically do as follows:
Figure FDA0002755585320000015
Figure FDA0002755585320000016
Figure FDA0002755585320000017
wherein C isxIs calculated as
Figure FDA00027555853200000113
Wherein B isrAnd BnRespectively representing the radar receiver bandwidth and the jammer bandwidth, Gε，
Figure FDA0002755585320000018
And
Figure FDA0002755585320000019
respectively representing the gains of the sum channel, the azimuth difference channel and the elevation difference channel of the beam direction of the radar antenna,
Figure FDA00027555853200000110
and
Figure FDA00027555853200000111
the phase changes of the sum channel, the azimuth difference channel and the elevation difference channel respectively representing the beam directions of the radar antenna, GyAnd
Figure FDA00027555853200000112
value following specific antenna type and echo signal azimuth arrival angle thetaxAnd pitch reach angle phixWhere y ═ epsilon, δ Az, δ El, can be described as
Figure FDA0002755585320000021
Wherein F is azimuth angle and pitch angle theta of radar antenna beamxAnd phixAn antenna pattern in time;
and step 3: computing target clutterAmplitude control of the sum signal and the signal parameters of the electronic interference signal
Figure FDA0002755585320000022
Amplitude-controlled azimuth difference signal parameter
Figure FDA0002755585320000023
Sum amplitude control pitch difference signal parameter
Figure FDA0002755585320000024
Wherein x ═ t, c, i respectively represent echo, clutter, electronic interference's amplitude and control signal parameter, specifically the way is as follows:
Figure FDA0002755585320000025
Figure FDA0002755585320000026
Figure FDA0002755585320000027
where μ is an amplitude control parameter:
Figure FDA0002755585320000028
wherein R ismaxAnd RminDenotes the maximum and minimum distance, A, over which amplitude control is performedmaxAnd AminFor maximum and minimum attenuation of the amplitude control, n represents the order of the attenuation curve.
2. The digital modeling method for radar receiver of claim 1, wherein n is 1,2,3,4 in step 3.
CN202011201816.2A 2020-11-02 2020-11-02 Digital modeling method of radar receiver Active CN112379341B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011201816.2A CN112379341B (en) 2020-11-02 2020-11-02 Digital modeling method of radar receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011201816.2A CN112379341B (en) 2020-11-02 2020-11-02 Digital modeling method of radar receiver

Publications (2)

Publication Number Publication Date
CN112379341A true CN112379341A (en) 2021-02-19
CN112379341B CN112379341B (en) 2023-06-20

Family

ID=74576557

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011201816.2A Active CN112379341B (en) 2020-11-02 2020-11-02 Digital modeling method of radar receiver

Country Status (1)

Country Link
CN (1) CN112379341B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113687322A (en) * 2021-09-06 2021-11-23 西安电子工程研究所 Mathematical modeling method for pulse compression processing of radar signal processor
CN113820694A (en) * 2021-11-24 2021-12-21 腾讯科技（深圳）有限公司 Simulation ranging method, related device, equipment and storage medium
CN114117723A (en) * 2021-09-06 2022-03-01 西安电子工程研究所 Mathematical modeling method for tracking filtering of radar signal processor

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1211187A (en) * 1983-02-04 1986-09-09 Richard L. Mitchell Electronic augmentation of radar targets
CN1928589A (en) * 2006-09-29 2007-03-14 清华大学 Method for producing noise wave base belt analog signals of space-borne two-foundation radar
CN102023293A (en) * 2010-09-14 2011-04-20 中国兵器工业第二○六研究所 Radar target intermediate frequency (IR) echo simulation system based on multi-beam amplitude-comparison angle measurement and control method thereof
US20120154208A1 (en) * 2010-12-17 2012-06-21 Raytheon Company Methods and apparatus for automatic stc from sea state measurement via radar sea clutter eccentricity
CA2733032A1 (en) * 2011-02-28 2012-08-28 Trusted Positioning Inc. Method and apparatus for improved navigation of a moving platform
CN103744080A (en) * 2014-01-16 2014-04-23 中国科学院电子学研究所 Satellite-borne multi-channel synthetic aperture radar imaging device
CN108205123A (en) * 2016-12-16 2018-06-26 北京振兴计量测试研究所 A kind of millimeter wave high powered radar signal simulator and analogy method
CN207968469U (en) * 2017-07-19 2018-10-12 国家新闻出版广电总局无线电台管理局 medium wave transmitter modulator and medium wave transmitter
CN109001697A (en) * 2018-08-14 2018-12-14 电子科技大学 A kind of multiple target radar echo simulator
CN110879924A (en) * 2019-12-09 2020-03-13 西安电子工程研究所 Modeling and simulation method of digital phased array antenna

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1211187A (en) * 1983-02-04 1986-09-09 Richard L. Mitchell Electronic augmentation of radar targets
CN1928589A (en) * 2006-09-29 2007-03-14 清华大学 Method for producing noise wave base belt analog signals of space-borne two-foundation radar
CN102023293A (en) * 2010-09-14 2011-04-20 中国兵器工业第二○六研究所 Radar target intermediate frequency (IR) echo simulation system based on multi-beam amplitude-comparison angle measurement and control method thereof
US20120154208A1 (en) * 2010-12-17 2012-06-21 Raytheon Company Methods and apparatus for automatic stc from sea state measurement via radar sea clutter eccentricity
CA2733032A1 (en) * 2011-02-28 2012-08-28 Trusted Positioning Inc. Method and apparatus for improved navigation of a moving platform
CN103744080A (en) * 2014-01-16 2014-04-23 中国科学院电子学研究所 Satellite-borne multi-channel synthetic aperture radar imaging device
EP2896971A1 (en) * 2014-01-16 2015-07-22 Institute of Electronics, Chinese Academy of Sciences Spaceborne Multi-Channel Synthetic Aperture Radar Imaging Device
CN108205123A (en) * 2016-12-16 2018-06-26 北京振兴计量测试研究所 A kind of millimeter wave high powered radar signal simulator and analogy method
CN207968469U (en) * 2017-07-19 2018-10-12 国家新闻出版广电总局无线电台管理局 medium wave transmitter modulator and medium wave transmitter
CN109001697A (en) * 2018-08-14 2018-12-14 电子科技大学 A kind of multiple target radar echo simulator
CN110879924A (en) * 2019-12-09 2020-03-13 西安电子工程研究所 Modeling and simulation method of digital phased array antenna

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
夏云 等: "面向雷达数字化仿真的目标回波模拟方法研究", 火控雷达技术, vol. 48, no. 4 *
张硕 等: "高频地波雷达目标高度估计的AR模型方法", 现代防御技术, vol. 35, no. 2 *
高路: "时域高分辨率雷达导引头回波信号数字仿真研究", 制导与引信, vol. 29, no. 1 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113687322A (en) * 2021-09-06 2021-11-23 西安电子工程研究所 Mathematical modeling method for pulse compression processing of radar signal processor
CN114117723A (en) * 2021-09-06 2022-03-01 西安电子工程研究所 Mathematical modeling method for tracking filtering of radar signal processor
CN113687322B (en) * 2021-09-06 2023-07-21 西安电子工程研究所 Mathematical modeling method for pulse compression processing of radar signal processor
CN114117723B (en) * 2021-09-06 2024-03-29 西安电子工程研究所 Mathematical modeling method for tracking filtering of radar signal processor
CN113820694A (en) * 2021-11-24 2021-12-21 腾讯科技（深圳）有限公司 Simulation ranging method, related device, equipment and storage medium
CN113820694B (en) * 2021-11-24 2022-03-01 腾讯科技（深圳）有限公司 Simulation ranging method, related device, equipment and storage medium

Also Published As

Publication number Publication date
CN112379341B (en) 2023-06-20

Similar Documents

Publication Publication Date Title
CN112379341A (en) Digital modeling method of radar receiver
CN106707255B (en) phased array radar simulation system and method
CN109283499B (en) Radar equation-based three-dimensional visualization method for detection range under active interference
CN108804736B (en) Method and device for designing and optimizing multi-degree-of-freedom frequency modulation signal
CN111812599B (en) Networking radar optimal waveform design method based on low interception performance under game condition
CN110618411B (en) Airborne radar clutter real-time signal generation method
CN113655447A (en) Time modulation array sideband suppression beam control method for radar communication integration
CN110118956B (en) Bistatic SAR anti-interference performance evaluation method for immune ground jammer area
CN105824016B (en) The steady space-time adaptive processing method of motion platform detections of radar treetop level target
CN112858994B (en) Amplitude comparison direction finding method based on uniform circular array
CN107479053B (en) STAP-based robust transmitting and receiving joint design method for ship-borne MIMO radar
CN111736129B (en) Space-time modulation bistatic radar system, implementation method and medium thereof
CN117250596A (en) Array optimization method of frequency diversity-phased array MIMO radar
CN109541557B (en) Radar antenna protection channel generation method
CN113721236B (en) Centralized MIMO radar system power distribution method based on transmitting pattern
CN111162878A (en) Multi-domain joint anti-interference method based on subarray dimension reduction band constraint
CN113093126B (en) Performance self-checking method of frequency modulation continuous wave radar signal processing system
CN113359196B (en) Multi-target vital sign detection method based on subspace method and DBF
CN112835006A (en) Method and system for tracking radar small-target detection on sea based on interframe accumulation
CN111142080A (en) Rapid constant modulus MIMO radar tracking waveform synthesis method aiming at interference suppression
CN113740820B (en) Mathematical modeling method for pulse Doppler processing of radar signal processor
CN114779198B (en) Conformal array airborne radar space-time clutter spectrum adaptive compensation and clutter suppression method
CN113671477B (en) Radar target distance estimation method based on graph signal processing
CN114527444B (en) Airborne MIMO radar self-adaptive clutter suppression method based on space-time sampling matrix
CN116520274B (en) Identification radar system for coal rock identification three-dimensional high-precision pre-detection

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20240111

Address after: 710100 Fengqi East Street, Weiqu, Chang'an District, Xi'an City, Shaanxi Province

Patentee after: Xi'an Electronic Engineering Research Institute

Patentee after: XI'AN CHANGYUAN ELECTRON ENGINEERING Co.,Ltd.

Address before: Changan District Fengqi road 710100 Shaanxi city of Xi'an Province

Patentee before: Xi'an Electronic Engineering Research Institute