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Detection of UAV Target Based on Continuous Radon Transform and Matched Filtering Process for Passive Bistatic Radar
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作者 Luo Zuo Yuefei Yan +6 位作者 Jun Wang Xin Sang Yan Wang Dongming Ge Lihao Ping Zhihai Wang Congsi Wang 《Journal of Beijing Institute of Technology》 EI CAS 2024年第1期9-18,共10页
Long-time integration technique is an effective way of improving target detection performance for unmanned aerial vehicle(UAV)in the passive bistatic radar(PBR),while range migration(RM)and Doppler frequency migration... Long-time integration technique is an effective way of improving target detection performance for unmanned aerial vehicle(UAV)in the passive bistatic radar(PBR),while range migration(RM)and Doppler frequency migration(DFM)may have a major effect due to the target maneuverability.This paper proposed an innovative long-time coherent integration approach,regarded as Continuous Radon-matched filtering process(CRMFP),for low-observable UAV target in passive bistatic radar.It not only mitigates the RM by collaborative research in range and velocity dimensions but also compensates the DFM and ensures the coherent integration through the matched filtering process(MFP).Numerical and real-life data following detailed analysis verify that the proposed method can overcome the Doppler mismatch influence and acquire comparable detection performance. 展开更多
关键词 passive bistatic radar unmanned aerial vehicle long-time coherent integration Radon-matched filtering process
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Direction finding of bistatic MIMO radar in strong impulse noise
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作者 CHEN Menghan GAO Hongyuan +2 位作者 DU Yanan CHENG Jianhua ZHANG Yuze 《Journal of Systems Engineering and Electronics》 SCIE CSCD 2024年第4期888-898,共11页
For bistatic multiple-input multiple-output(MIMO)radar,this paper presents a robust and direction finding method in strong impulse noise environment.By means of a new lower order covariance,the method is effective in ... For bistatic multiple-input multiple-output(MIMO)radar,this paper presents a robust and direction finding method in strong impulse noise environment.By means of a new lower order covariance,the method is effective in suppressing impulse noise and achieving superior direction finding performance using the maximum likelihood(ML)estimation method.A quantum equilibrium optimizer algorithm(QEOA)is devised to resolve the corresponding objective function for efficient and accurate direc-tion finding.The results of simulation reveal the capability of the presented method in success rate and root mean square error over existing direction-finding methods in different application situations,e.g.,locating coherent signal sources with very few snapshots in strong impulse noise.Other than that,the Cramér-Rao bound(CRB)under impulse noise environment has been drawn to test the capability of the presented method. 展开更多
关键词 bistatic multiple-input multiple-output(MIMO)radar impulse noise direction finding lower order covariance quan-tum equilibrium optimizer algorithm(QEOA) maximum likeli-hood estimation method Cramér-Rao bound(CRB)
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基于随机共振理论的双基ISAR弱信号提取及成像分析 被引量:9
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作者 邓冬虎 朱小鹏 +2 位作者 张群 罗迎 李宏伟 《电子学报》 EI CAS CSCD 北大核心 2012年第9期1809-1816,共8页
在双基地逆合成孔径雷达成像系统中,针对强背景噪声中的目标弱散射点探测和识别问题,基于能捕获目标强散射点的假设前提,提出了应用随机共振理论的弱散射点检测方法.首先对作解线调后的回波信号进行快时间轴变换处理,并对处理后的信号... 在双基地逆合成孔径雷达成像系统中,针对强背景噪声中的目标弱散射点探测和识别问题,基于能捕获目标强散射点的假设前提,提出了应用随机共振理论的弱散射点检测方法.首先对作解线调后的回波信号进行快时间轴变换处理,并对处理后的信号进行二次采样使其满足绝热近似条件;然后应用随机共振技术检测出代表瞬时距离差的弱周期信号频率,并通过循环检测和正负频率判断等后续处理提高系统的检测信噪比以及确定弱散射点的正确位置.最后对随机共振性能和双基ISAR成像进行了仿真.结果表明:随机共振能大幅提高弱周期信号的输出信噪比,应用在双基ISAR系统中能有效提高系统的信噪比增益和扩大雷达接收机的动态范围. 展开更多
关键词 逆合成孔径雷达(ISAR) 双基地雷达(Bistatic Radar) 随机共振(SR) 二次采样
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基于等效单站的双基地SAR波数域成像算法 被引量:1
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作者 吴宗亮 张晓玲 方宁 《系统工程与电子技术》 EI CSCD 北大核心 2014年第12期2393-2399,共7页
为了使传统波数域成像算法能够很好地适用于双基地合成孔径雷达(synthetic aperture radar,SAR),首先建立了双基地SAR的等效单站模型。然后又进一步建立了基于该等效单站SAR的波数域二维频谱模型。通过分析发现,传统的波数域成像算法会... 为了使传统波数域成像算法能够很好地适用于双基地合成孔径雷达(synthetic aperture radar,SAR),首先建立了双基地SAR的等效单站模型。然后又进一步建立了基于该等效单站SAR的波数域二维频谱模型。通过分析发现,传统的波数域成像算法会造成波数域回波信息的损失,从而达不到理想的聚焦效果,所以为了充分利用全部波数域回波信息以提高聚焦能力,提出了一种全新的波数域成像数学模型。最后实验结果验证了新算法的有效性。 展开更多
关键词 双基地合成孔径雷达 等效单站模型 聚焦效果 波数域成像算法 BISTATIC synthetic APERTURE radar (SAR)
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同轨构型下LBF双基谱精度分析
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作者 陈士超 武其松 +2 位作者 周鹏 邢孟道 保铮 《电子与信息学报》 EI CSCD 北大核心 2012年第2期504-508,共5页
双基谱精度分析是设计成像算法的前提,该文针对同轨等速构型详细给出了LBF(Loffeld’s bistatic formula)的谱精度分析,当半双基角的余弦值为1和基线长与目标到航线的最近距离的比值等于半双基角的正切值这两个条件同时满足时,LBF谱是... 双基谱精度分析是设计成像算法的前提,该文针对同轨等速构型详细给出了LBF(Loffeld’s bistatic formula)的谱精度分析,当半双基角的余弦值为1和基线长与目标到航线的最近距离的比值等于半双基角的正切值这两个条件同时满足时,LBF谱是完全严格解析的。谱精度不受基线长度和斜视角大小的影响,通过仿真实验分析讨论了各种约束对于谱精度的影响。 展开更多
关键词 双基地合成孔径雷达 LBF(Loffeld’s BISTATIC Formula)双基频谱 严格解析双基频谱
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A jamming method against bistatic SAR based on modulation theory 被引量:9
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作者 RAN Jinhe LI Xiuhe SHEN Yang 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2019年第3期504-510,共7页
This paper focuses on the jamming problem of bistatic synthetic aperture radar (BiSAR), and a jamming method against BiSAR based on modulation theory is proposed. The proposed jamming method modulates the BiSAR signal... This paper focuses on the jamming problem of bistatic synthetic aperture radar (BiSAR), and a jamming method against BiSAR based on modulation theory is proposed. The proposed jamming method modulates the BiSAR signal with the cosinusoidal phase to generate multi-false targets in range, and further rotates the jammer to generate multi-false targets in azimuth. The range multi-false targets and azimuth multi-false targets form the two-dimensional cover jamming or deception jamming, which can protect the important targets efficiently. The number of false targets, the interval of false targets, and the jamming square can be adjusted flexibly by setting different range jamming parameters and azimuth jamming parameters. The jamming performance and the choosing criteria of jamming parameters are also discussed. Finally, the simulated data verify the effectiveness of the jamming method. 展开更多
关键词 BISTATIC SYNTHETIC APERTURE radar (BiSAR) cosinusoidal phase COVER jamming MICRO-MOTION modulation
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Hybrid method for investigation of electromagnetic scattering from conducting target above the randomly rough surface 被引量:7
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作者 王蕊 郭立新 +1 位作者 麻军 吴振森 《Chinese Physics B》 SCIE EI CAS CSCD 2009年第4期1503-1511,共9页
A current based hybrid method (HM) is proposed which combines the method of moment (MOM) with the Kirchhoff approximation (KA) for the analysis of scattering interaction between a two-dimensional (2D) infinite... A current based hybrid method (HM) is proposed which combines the method of moment (MOM) with the Kirchhoff approximation (KA) for the analysis of scattering interaction between a two-dimensional (2D) infinitely long conducting target with arbitrary cross section and a one-dimensional (1D) Gaussian rough surface. The electromagnetic scattering region in the HM is split into KA region and MOM region. The electric field integral equation (EFIE) in MOM region (target) is derived, the computational time of the HM depends mainly on the number of unknowns of the target. The bistatic scattering coefficient for the infinitely long cylinder above the rough surface with Gaussian roughness spectrum is calculated, and the numerical results are compared and verified with those obtained by the conventional MOM, which shows the high efficiency of the HM. Finally, the influence of the size, location of the target, the rms height and correlation length of the rough surface on the bistatic scattering coefficient with different polarizations is discussed in detail. 展开更多
关键词 method of moment hybrid method Gaussian rough surface bistatic scattering
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Target detection using CDMA based passive bistatic radar 被引量:10
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作者 Haitao Wang Jun Wang Hongwei Li 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2012年第6期858-865,共8页
Recently, the code division multiple access (CDMA) waveform exists in the large area across the world. However, when using the CDMA system as the illuminator of opportunity for the passive bistatic radar (PBR), th... Recently, the code division multiple access (CDMA) waveform exists in the large area across the world. However, when using the CDMA system as the illuminator of opportunity for the passive bistatic radar (PBR), there exists interference not only from the base station used as the illuminator of opportunity but also from other base stations with the same frequency. And be cause in the CDMA system, the signal transmitted by each base station is different, using the direct signal of one base station can not cancel the interference from other base stations. A CDMA based PBR using an element linear array antenna as both the reference antenna and surveillance antenna is introduced. To deal with the interference in this PBR system, an adaptive temporal cancellation algorithm is used to remove the interference from the base station used as the illuminator of opportunity firstly. And then a robust adaptive beamformer is used to suppress the interference from other base stations. Finally, the preliminary experiment re sults demonstrate the feasibility of using CDMA signals as a radar waveform. 展开更多
关键词 passive bistatic radar (PBR) code division multipleaccess (CDMA) signal interference suppression target detection.
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Bistatic RCS Prediction with Graphical Electromagnetic Computing (GRECO) Method for Moving Targets 被引量:4
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作者 秦德华 王宝发 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2002年第3期161-165,共5页
Graphical Electromagnetic Computing (GRECO) is recognized as one of the most valuable methods of the RCS (Radar Cross Section) computation for the high frequency region. The method of GRECO and Monostatic bistatic Equ... Graphical Electromagnetic Computing (GRECO) is recognized as one of the most valuable methods of the RCS (Radar Cross Section) computation for the high frequency region. The method of GRECO and Monostatic bistatic Equivalence Theorem was used to calculate the bistatic RCS for moving targets in the high frequency region. Some computing examples are given to verify the validity of the method. Excellent agreement with the measured data indicates that the method has practical engineering value. 展开更多
关键词 electromagnetic wave scattering GRECO moving targets bistatic radar cross section monostatic bistatic equivalence theorem
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Research on spatial-variant property of bistatic ISAR imaging plane of space target 被引量:5
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作者 郭宝锋 王俊岭 +2 位作者 高梅国 尚朝轩 傅雄军 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第4期507-520,共14页
The imaging plane of inverse synthetic aperture radar (ISAR) is the projection plane of the target. When taking an image using the range-Doppler theory, the imaging plane may have a spatial-variant property, which c... The imaging plane of inverse synthetic aperture radar (ISAR) is the projection plane of the target. When taking an image using the range-Doppler theory, the imaging plane may have a spatial-variant property, which causes the change of scatter's projection position and results in migration through resolution cells, In this study, we focus on the spatial-variant property of the imaging plane of a three-axis-stabilized space target. The innovative contributions are as follows. 1) The target motion model in orbit is provided based on a two-body model. 2) The instantaneous imaging plane is determined by the method of vector analysis. 3) Three Euler angles are introduced to describe the spatial-variant property of the imaging plane, and the image quality is analyzed. The simulation results confirm the analysis of the spatial-variant property. The research in this study is significant for the selection of the imaging segment, and provides the evidence for the following data processing and compensation algorithm. 展开更多
关键词 space target bistatic ISAR imaging plane spatial-variant property
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Precise time frequency synchronization technology for bistatic radar 被引量:5
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作者 Huang Yulin Yang Jianyu Wu Junjie Xiong Jintao 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2008年第5期929-933,共5页
A complete method of synchronization technology of bistatic radar using global position system (GPS) is presented. The pulse per second signal (1PPS) is elaborately modified to increase the time synchronization pr... A complete method of synchronization technology of bistatic radar using global position system (GPS) is presented. The pulse per second signal (1PPS) is elaborately modified to increase the time synchronization precision and keep loop locking. A very high time synchronization precision is achieved. Using the modified 1PPS to discipline the local OCXO, the reference frequency signal achieves both high long term stability (LTS) and short term stability (STS) properties. An algorithm, named phase abrupt change CFAR is presented to restrain the 1PPS phase abrupt change and keep loop locking. The experimental results indicate that this time and frequency synchronization method is effective and the time synchronization precision of the synchronization system can be improved from ±100 ns to ±25 ns. In addition, the phase noise is improved to 20 dB. 展开更多
关键词 bistatic radar GPS time synchronization frequency phase synchronization.
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Modeling of bistatic scattering from an underwater non-penetrable target using a Kirchhoff approximation method 被引量:4
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作者 Bin Wang Wen-huan Wang +3 位作者 Jun Fan Kai-qi Zhao Fu-lin Zhou Li-wen Tan 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2022年第7期1097-1106,共10页
A numerical triangulation and transformation into the time domain of a Kirchhoff approximation(KA)method is proposed for the modeling of bistatic scattering from an underwater non-penetrable target.The time domain sol... A numerical triangulation and transformation into the time domain of a Kirchhoff approximation(KA)method is proposed for the modeling of bistatic scattering from an underwater non-penetrable target.The time domain solution in this approximation can be split up into two parts:the solution of reflected field,contributing around the specular direction,and the solution of shadow radiation,contributing around the forward direction.An average solution in the time domain satisfying the reciprocity principle is presented.The solution is expressed in terms of non-singular functions.The proposed method is validated against a normal mode method for bistatic scattering from a rigid sphere.Moreover,the reflected and shadow highlights on the surface of the sphere are shown to verify the integration surface of the reflected field and shadow radiation.It is also tested against a finite element method and an experiment involving a scaled Benchmark Target Strength Simulation Submarine model.The time-angle bistatic spectra for the model are evaluated by the direct and transformed average solutions of KA,and the former accelerates its speed of calculation.The results are good,and show that this method can be used to predict the bistatic scattered field of a non-penetrable target. 展开更多
关键词 Kirchhoff approximation Bistatic scattering Time domain RECIPROCITY EXPERIMENT
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Space-time clutter model for airborne bistatic radar with non-Gaussian statistics 被引量:4
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作者 Duan Rui Wang Xuegang Jiang Chaoshu Chen Zhuming 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2009年第2期283-290,共8页
To validate the potential space-time adaptive processing (STAP) algorithms for airborne bistatic radar clutter suppression under nonstationary and non-Gaussian clutter environments, a statistically non-Gaussian, spa... To validate the potential space-time adaptive processing (STAP) algorithms for airborne bistatic radar clutter suppression under nonstationary and non-Gaussian clutter environments, a statistically non-Gaussian, space-time clutter model in varying bistatic geometrical scenarios is presented. The inclusive effects of the model contain the range dependency of bistatic clutter spectrum and clutter power variation in range-angle cells. To capture them, a new approach to coordinate system conversion is initiated into formulating bistatic geometrical model, and the bistatic non-Gaussian amplitude clutter representation method based on a compound model is introduced. The veracity of the geometrical model is validated by using the bistatic configuration parameters of multi-channel airborne radar measurement (MCARM) experiment. And simulation results manifest that the proposed model can accurately shape the space-time clutter spectrum tied up with specific airborne bistatic radar scenario and can characterize the heterogeneity of clutter amplitude distribution in practical clutter environments. 展开更多
关键词 airborne bistatic radar clutter model GEOMETRY NON-GAUSSIAN
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Study of detection performance of passive bistatic radars based on FM broadcast 被引量:5
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作者 Shan Tao Tao Ran Wang Yue Zhou Siyong 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2007年第1期22-26,共5页
The passive bistatic radar based on the FM broadcast has inherent superiority with respect to its survivability. In this article, the ambiguity function (AF) and the cross ambiguity function (CAF) of the FM radio ... The passive bistatic radar based on the FM broadcast has inherent superiority with respect to its survivability. In this article, the ambiguity function (AF) and the cross ambiguity function (CAF) of the FM radio signal are analyzed and illustrated. The Kolmogorov Smirnov (K-S) test verifies that the amplitude probability density function of the CAF side lobes is exponential; the distribution of the target is also deduced. Finally, the detection performance of the passive radar is studied, and the result shows that this new type bistatic radar has favorable detection capability. 展开更多
关键词 Bistatic radar Ambiguity function Cross ambiguity function Probability density function (PDF)
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Target detection method in passive bistatic radar 被引量:5
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作者 CHEN Gang WANG Jun 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2020年第3期510-519,共10页
Owing to the advantages in detecting the low altitude and stealth target,passive bistatic radar(PBR)has received much attention in surveillance purposes.Due to the uncontrollable characteristic of the transmitted sign... Owing to the advantages in detecting the low altitude and stealth target,passive bistatic radar(PBR)has received much attention in surveillance purposes.Due to the uncontrollable characteristic of the transmitted signal,a high level range or Doppler sidelobes may exist in the ambiguity function which will degrade the target detection performance.Mismatched filtering is a common method to deal with the ambiguity sidelobe problem.However,when mismatched filtering is applied,sidelobes cannot be eliminated completely.The residual sidelobes will cause false-alarm when the constant false alarm ratio(CFAR)is applied.To deal with this problem,a new target detection method based on preprocessing is proposed.In this new method,the ambiguity range and Doppler sidelobes are recognized and eliminated by the preprocessing method according to the prior information.CFAR is also employed to obtain the information of the target echo.Simulation results and results on real data illustrate the effectiveness of the proposed method. 展开更多
关键词 passive bistatic radar(PBR) mismatched filtering ambiguity sidelobe target detection
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Retrieval of sea surface winds under hurricane conditions from GNSS-R observations 被引量:4
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作者 JING Cheng YANG Xiaofeng +4 位作者 MA Wentao YU Yang DONG Di LI Ziwei XU Cong 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2016年第9期91-97,共7页
Reflected signals from global navigation satellite systems(GNSSs) have been widely acknowledged as an important remote sensing tool for retrieving sea surface wind speeds.The power of GNSS reflectometry(GNSS-R)sig... Reflected signals from global navigation satellite systems(GNSSs) have been widely acknowledged as an important remote sensing tool for retrieving sea surface wind speeds.The power of GNSS reflectometry(GNSS-R)signals can be mapped in delay chips and Doppler frequency space to generate delay Doppler power maps(DDMs),whose characteristics are related to sea surface roughness and can be used to retrieve wind speeds.However,the bistatic radar cross section(BRCS),which is strongly related to the sea surface roughness,is extensively used in radar.Therefore,a bistatic radar cross section(BRCS) map with a modified BRCS equation in a GNSS-R application is introduced.On the BRCS map,three observables are proposed to represent the sea surface roughness to establish a relationship with the sea surface wind speed.Airborne Hurricane Dennis(2005) GNSS-R data are then used.More than 16 000 BRCS maps are generated to establish GMFs of the three observables.Finally,the proposed model and classic one-dimensional delay waveform(DW) matching methods are compared,and the proposed model demonstrates a better performance for the high wind speed retrievals. 展开更多
关键词 global navigation satellite system-reflectometry Hurricane Dennis delay doppler maps bistatic radar cross section map sea surface wind speed
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Design Bistatic Interferometric DEM Generation Algorithm and Its Theoretical Accuracy Analysis for LuTan-1 Satellites 被引量:9
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作者 Bing XU Liqun LIU +3 位作者 Zhiwei LI Yan ZHU Jingxin HOU Wenxiang MAO 《Journal of Geodesy and Geoinformation Science》 2022年第1期25-38,共14页
LuTan-1(LT-1)is a constellation with two full-polarization L-band radar satellites designed by China,and the first satellite was scheduled to be launched in December 2021 and the second one in January 2022.The LT-1 wi... LuTan-1(LT-1)is a constellation with two full-polarization L-band radar satellites designed by China,and the first satellite was scheduled to be launched in December 2021 and the second one in January 2022.The LT-1 will be operated for deformation monitoring in repeat-pass mode,and for DEM generation in bistatic mode,improving self-sufficiency of SAR data for the field of geology,earthquake,disaster reduction,geomatics,forestry and so on.In this paper,we focused on designing an algorithm for interferometric DEM generation using LT-1 bistatic satellites.The basic principle,main error sources and errors control of the DEM generation algorithm of LT-1 were systematically analyzed.The experiment results demonstrated that:①The implemented algorithm had rigorous resolution with a theoretic accuracy better than 0.03 m for DEM generation.②The errors in satellite velocity and Doppler centroid had no obvious effect on DEM accuracy and they could be neglected.While the errors in position,baseline,slant range and interferometric phase had a significant effect on DEM accuracy.And the DEM error caused by baseline error was dominated,followed by the slant range error,interferometric phase error and satellite position error.③To obtain an expected DEM accuracy of 2 m,the baseline error must be strictly controlled and its accuracy shall be 1.0 mm or better for Cross-Track and Normal-Direction component,respectively.And the slant range error and interferometric phase error shall be reasonably controlled.The research results were of great significance for accurately grasping the accuracy of LT-1 data products and their errors control,and could provide a scientific auxiliary basis for LT-1 in promoting global SAR technology progress and the generation of high-precision basic geographic data. 展开更多
关键词 Synthetic Aperture Radar bistatic InSAR LuTan-1 Digital Elevation Model(DEM) baseline error
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Joint adaptive waveform and baseline range design for bistatic radar 被引量:2
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作者 王璐璐 王宏强 +1 位作者 程永强 秦玉亮 《Journal of Central South University》 SCIE EI CAS 2014年第6期2262-2272,共11页
The problems of joint adaptive waveform design and baseline range design for bistatic radar to maximize the practical radar resolution were considered.Distinguishing from the conventional ambiguity function(AF)-based ... The problems of joint adaptive waveform design and baseline range design for bistatic radar to maximize the practical radar resolution were considered.Distinguishing from the conventional ambiguity function(AF)-based resolution which is only related with the transmitted waveform and bistatic geometry and could be regarded as the potential resolution of a bistatic radar system,the practical resolution involves the effect of waveform,signal-to-noise ratio(SNR)as well as the measurement model.Thus,it is more practical and will have further significant application in target detection and tracking.The constraint optimization procedure of joint adaptive waveform design and baseline range design for maximizing the practical resolution of bistatic radar system under dynamic target scenario was devised.Simulation results show that the range and velocity resolution are enhanced according to the adaptive waveform and bistatic radar configuration. 展开更多
关键词 ambiguity function (AF) adaptive waveform design bistatic radar baseline range design RESOLUTION
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Azimuth space-variant properties of BiSAR with nonequal velocities 被引量:2
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作者 Yang Yonghong Pi Yiming 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2008年第5期919-922,共4页
Bistatic SAR possesses characteristic of the azimuth space-variant when the velocities of transmitter and receiver are not equal. The geometric model of BiSAR with the parallel trajectories and the nonequal platform v... Bistatic SAR possesses characteristic of the azimuth space-variant when the velocities of transmitter and receiver are not equal. The geometric model of BiSAR with the parallel trajectories and the nonequal platform velocities is presented. Analyzing the motion relationship of transmitter and receiver, the formula of azimuth spacevariant is derived in time domain. Via Taylor polynomial expansions, the azimuth space-variant is factorized by four terms: zero-order, first-order, second-order, and third-order term. And, their impacts on impulse response are illuminated. Some characteristics about azimuth space-variant of airborne BiSAR case are exhibited by simulation experiments, and these simulated results are coincident with the formulae of azimuth space-variant. 展开更多
关键词 bistatic SAR range migration azimuth space-variant imaging formation algorithm.
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Multi-target localization for bistatic MIMO radar in the presence of unknown mutual coupling 被引量:3
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作者 Zhidong Zheng Jianyun Zhang Yuebo Wu 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2012年第5期708-714,共7页
A decoupling-estimation signal parameters via rotarional invariance technique(ESPRIT) method is presented for multi-target localization with unknown mutual coupling in bistatic multiple-input multiple-output(MIMO)... A decoupling-estimation signal parameters via rotarional invariance technique(ESPRIT) method is presented for multi-target localization with unknown mutual coupling in bistatic multiple-input multiple-output(MIMO) radar.Two steps are carried out in this method.The decoupling operation between angle and mutual coupling estimates is realized by choosing the auxiliary elements on both sides of the transmit and receive uniform linear arrays(ULAs).Then the ESPRIT method is resilient against the unknown mutual coupling matrix(MCM) and can be directly utilized to estimate the direction of departure(DOD) and the direction of arrival(DOA).Moreover,the mutual coupling coefficient is estimated by finding the solution of the linear constrained optimization problem.The proposed method allows an efficient DOD and DOA estimates with automatic pairing.Simulation results are presented to verify the effectiveness of the proposed method. 展开更多
关键词 bistatic multiple-input multiple-output(MIMO) radar angle estimation mutual coupling auxiliary element estimation signal parameters via rotarional invariance technique(ESPRIT)
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