频率分集极化MIMO雷达目标检测
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摘要
为了提高集中式多输入多输出(MIMO)雷达的目标检测性能,提出了一种频率分集极化MIMO雷达.该雷达的发射端采用频率分集和极化分集,接收端以变极化或者正交极化方式接收回波信号,并且基于目标极化散射特性优化设计发射极化和接收极化来进一步提高性能.基于奈曼-皮尔逊准则设计了检测算法,并推导了虚警概率和检测概率的近似计算公式.仿真结果表明:频率分集极化MIMO雷达的检测性能优于极化MIMO雷达和频率分集MIMO雷达,并且采用正交极化接收方式可以获得更好的检测性能.
In order to improve the target detection performance of co-located multiple-input multiple-output(MIMO) radar,a special frequency diverse polarimetric MIMO(FDP-MIMO) radar was explored in this paper.In the FDP-MIMO radar,polarization and frequency diversity were employed in the transmit antennas,and varied polarization or orthogonal polarization was adopted in the receive antennas to measure the echo signal.Furthermore,the transmitting and receiving polarization were optimized based on the target scattering property to further enhance its performance.The target detection algorithm was designed under the Neyman-Pearson criterion, and the approximate expressions for the probability of false alarm and the probability of detection were derived in this paper. The simulation results demonstrate that the FDP-MIMO radar has a better performance for target detection than the polarimetric MIMO radar and frequency diversity MIMO radar, and better detection performance is achieved with the orthogonal polarization receiving.
In order to improve the target detection performance of co-located multiple-input multiple-output(MIMO) radar,a special frequency diverse polarimetric MIMO(FDP-MIMO) radar was explored in this paper.In the FDP-MIMO radar,polarization and frequency diversity were employed in the transmit antennas,and varied polarization or orthogonal polarization was adopted in the receive antennas to measure the echo signal.Furthermore,the transmitting and receiving polarization were optimized based on the target scattering property to further enhance its performance.The target detection algorithm was designed under the Neyman-Pearson criterion, and the approximate expressions for the probability of false alarm and the probability of detection were derived in this paper. The simulation results demonstrate that the FDP-MIMO radar has a better performance for target detection than the polarimetric MIMO radar and frequency diversity MIMO radar, and better detection performance is achieved with the orthogonal polarization receiving.
引文
[1]ZHOU S H,LIU H W.Target statistical correlation characteristic for spatial-frequency jointly diversity MIMO radar[J].IET Radar Sonar and Navigation,2011,5(6):638-649.
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[7]XIANG Z,CHEN B X,YANG M L.Statistical method with dual-polarized MIMO array for target discrimination[J].IEEE Antennas&Wireless Propagation Letters,2017(16):1313-1316.
[8]XIANG Z,CHEN B X,YANG M L.Transmitter polarization optimization with polarimetric MIMO radar for mainlobe interference suppression[J].Digital Signal Processing,2017,65:19-26.
[9]XIANG Z,CHEN B X,YANG M L.Transmitter/receiver polarization optimization based on oblique projection filtering for mainlobe interference suppression in polarimetric MIMO radar[J].Iet Radar,Sonar&Navigation,2018,12(1):137-144.
[10]CUI G L,KONG L J,YANG X B.The Rao and Wald tests designed for distributed targets with polarization MIMO radar in compound-Gaussian clutter[J].Circuits,Systems and Signal Processing,2012,31(1):237-254.
[11]赵宜楠,姜智卓,唐晨亮,等.复合高斯杂波中极化MIMO雷达的自适应检测[J].系统工程与电子技术,2015,37(11):2474-2479.
[12]GOGINENI S,NEHORAI A.Polarimetric MIMO radar with distributed antennas for target detection[J].IEEETransactions on Signal Processing,2010,58(3):1689-1697.
[13]GOGINENI S,NEHORAI A.Game theoretic design for polarimetric MIMO radar target detection[J].Signal Processing,2012,92(5):1281-1289.
[14]BORGEAUD M,SHI R T,KONG J A.Theoretical models for polarimetric radar clutter[J].Journal of Electromagnetic Waves and Applications,1987(1):73-89.
[15]SINCLAIR G.The transmission and reception of elliptically polarized waves[J].Proceedings of the IRE,1950,38(2):148-151.
[16]ZHOU S H,LIU H W,ZHAO Y B,et al.Target spatial and frequency scattering diversity property for diversity MIMO radar[J].Signal Processing,2011,91(2):269-276.
[17]FEIVESON A H,DELANEY F C.The distribution and properties of a weighted sum of CHI squares[J].Washington:NASA Technical Note,1968.
[2]LIU H W,Zh OU S H,YU Y,et al.Detection performance of spatial-frequency diversity MIMO radar[J].IEEE Transactions on Aerospace and Electronic Systems,2014,50(4):3137-3155.
[3]GIULI D.Polarization diveristy in radars[J].Proceedings of the IEEE,1986,74(2):245-269.
[4]LI J,STOICA P.MIMO radar signal processing[M].Hoboken:John Wiley&Sons lnc.,2009:1-6.
[5]BENCHEIKH M L,WANG Y.Combined EspritRootmusic for DOA-DOD estimation in polarimetric bistatic MIMO radar[J].Progress in Electromagnetics Research Letters,2013,22(22):109-117.
[6]JIANG H,ZHANG Y,LI J.et al.A PARAFAC-based algorithm for multidimensional parameter estimation in polarimetric bistatic MIMO radar[J].EURASIP Journal on Advances in Signal Processing,2013,1:1-14.
[7]XIANG Z,CHEN B X,YANG M L.Statistical method with dual-polarized MIMO array for target discrimination[J].IEEE Antennas&Wireless Propagation Letters,2017(16):1313-1316.
[8]XIANG Z,CHEN B X,YANG M L.Transmitter polarization optimization with polarimetric MIMO radar for mainlobe interference suppression[J].Digital Signal Processing,2017,65:19-26.
[9]XIANG Z,CHEN B X,YANG M L.Transmitter/receiver polarization optimization based on oblique projection filtering for mainlobe interference suppression in polarimetric MIMO radar[J].Iet Radar,Sonar&Navigation,2018,12(1):137-144.
[10]CUI G L,KONG L J,YANG X B.The Rao and Wald tests designed for distributed targets with polarization MIMO radar in compound-Gaussian clutter[J].Circuits,Systems and Signal Processing,2012,31(1):237-254.
[11]赵宜楠,姜智卓,唐晨亮,等.复合高斯杂波中极化MIMO雷达的自适应检测[J].系统工程与电子技术,2015,37(11):2474-2479.
[12]GOGINENI S,NEHORAI A.Polarimetric MIMO radar with distributed antennas for target detection[J].IEEETransactions on Signal Processing,2010,58(3):1689-1697.
[13]GOGINENI S,NEHORAI A.Game theoretic design for polarimetric MIMO radar target detection[J].Signal Processing,2012,92(5):1281-1289.
[14]BORGEAUD M,SHI R T,KONG J A.Theoretical models for polarimetric radar clutter[J].Journal of Electromagnetic Waves and Applications,1987(1):73-89.
[15]SINCLAIR G.The transmission and reception of elliptically polarized waves[J].Proceedings of the IRE,1950,38(2):148-151.
[16]ZHOU S H,LIU H W,ZHAO Y B,et al.Target spatial and frequency scattering diversity property for diversity MIMO radar[J].Signal Processing,2011,91(2):269-276.
[17]FEIVESON A H,DELANEY F C.The distribution and properties of a weighted sum of CHI squares[J].Washington:NASA Technical Note,1968.