低空镜像角闪烁的雷达极化效应分析
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摘要
雷达探测低空目标时,镜像"目标"严重影响雷达检测与仰角测量性能。镜像"目标"对雷达仰角测量的影响一般用两点源角闪烁模型来描述,国内外已有很多文献对低空镜像角闪烁问题展开了研究,但未对雷达极化的重要影响给予足够关注。本文着重围绕雷达天线极化和目标极化散射矩阵对低空镜像角闪烁的影响效应,开展了理论推导与仿真分析,相关模型可为雷达低空镜像角闪烁抑制技术提供参考和依据。
Specular multipath causes erratic elevation tracking at low target detection, which can be described as two-point glint model. The multipath errors encountered in radar tracking of low-elevation targets have attracted increasing interest in recent years. Many techniques for reducing radar multipath angle-tracking errors are proposed, but the important influence of radar polarization is not paid enough attention to. The theoretical derivation and simulation analysis are carried out about the effect of radar antenna polarization and polarization scattering matrix of target and image target. This proposed model can provide a reference for low angle target tracking.
Specular multipath causes erratic elevation tracking at low target detection, which can be described as two-point glint model. The multipath errors encountered in radar tracking of low-elevation targets have attracted increasing interest in recent years. Many techniques for reducing radar multipath angle-tracking errors are proposed, but the important influence of radar polarization is not paid enough attention to. The theoretical derivation and simulation analysis are carried out about the effect of radar antenna polarization and polarization scattering matrix of target and image target. This proposed model can provide a reference for low angle target tracking.
引文
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[12]徐振海,肖顺平,熊子源.阵列雷达低角跟踪技术[M].北京:科学出版社,2014:145-156.(XUZhenhai,XIAO Shunping,XIONG Ziyuan. Array radar low angle tracking technology[M]. Beijing:Science Press, 2014:145-156.)
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[15]杨世海.相控阵雷达低空目标探测与跟踪技术研究[D].长沙:国防科技大学,2002:36-40.(YANGShihai.Research on low-altitude target detection and tracking technology of phased array radar[D]. Changsha,China:National University of Defense Technology, 2002:36-40.)
[16]丁鹭飞.雷达原理[M].西安:西安电子科技大学出版社,2001:15-21.(DINGLufei.Radarprinciple[M].Xi'an,China:Xidian University Press, 2001:15-21.)
[2]BARTON D K. Low-angle radar tracking[J]. Proceedings of IEEE, 1974,62(6):687-704.
[3]BAR-SHALOM Y,KUMAR A. Tracking low elevation targets in the presence of multipath propagation[J]. IEEE Transactions on Aerospace and Electronic System, 1994,30(3):162-173.
[4]HOWARD D D,SHERMAN S M,THOMSON D N,et al. Experimental results of the complex indicated angle technique for multipath correction[J]. IEEE Transactions on Aerospace and Electronic Systems, 1974,10(6):779-787.
[5]WHITE W D. Double-null technique for low-angle tracking[J]. Microwave Journal, 1976(19):35-38,60.
[6]WHITE W D. Low-angle radar tracking in the presence of multipath[J]. IEEE Transactions on Aerospace and Electronic Systems, 1974,10(6):835–852.
[7]杨世海,胡卫东,杜小勇.雷达低空目标跟踪的偏差补偿算法研究[J].电子学报,2002,30(12):1741-1744.(YANG Shihai,HU Weidong,DU Xiaoyong. Research on deviation compensation algorithm for radar low altitude target tracking[J].Acta Electronica Sinica, 2002,30(12):1741-1744.)
[8]赵宏钟,何松华.基于高分辨距离像的单脉冲角跟踪技术[J].电子学报, 2000,8(4):142-144.(ZHAO Hongzhong,HE Songhua.Single pulse angle tracking technology based on high resolution range image[J]. Acta Electronica Sinica, 2000,8(4):142-144.)
[9]MANGULISV.Frequencydiversityinlow-angleradartracking[J].IEEETransactionsonAerospaceandElectronic Systems, 1981,17(1):149-153.
[10]施龙飞,王雪松,肖顺平.低空镜像角闪烁的极化抑制[J].电波科学学报, 2008,23(6):1038-1044.(SHI Longfei,WANG Xuesong,XIAOShunping.Low-levelmirrorangleflickerpolarizationsuppression[J].ChineseJournalofRadioScience,2008,23(6):1038-1044.)
[11]施龙飞.雷达极化抗干扰技术研究[D].长沙:国防科技大学, 2003.(SHI Longfei. Research on radar polarization antijamming technology[D]. Changsha,China:National University of Defense Technology, 2003.)
[12]徐振海,肖顺平,熊子源.阵列雷达低角跟踪技术[M].北京:科学出版社,2014:145-156.(XUZhenhai,XIAO Shunping,XIONG Ziyuan. Array radar low angle tracking technology[M]. Beijing:Science Press, 2014:145-156.)
[13]黄培康,殷红成,许小剑.雷达目标特性[M].北京:电子工业出版社, 2005:162-164.(HUANG Peikang,YIN Hongcheng,XU Xiaojian. Radar target characteristics[M]. Beijing:Publishing House of Eletronics Industry, 2005:162-164.)
[14]MONAKOV Andrei. Maximum-likelihood estimation of parameters of an extended target in tracking monopulse radars[J].IEEE Transactions on Aerospace and Electronic Systems, 2012,48(3):2653–2665.
[15]杨世海.相控阵雷达低空目标探测与跟踪技术研究[D].长沙:国防科技大学,2002:36-40.(YANGShihai.Research on low-altitude target detection and tracking technology of phased array radar[D]. Changsha,China:National University of Defense Technology, 2002:36-40.)
[16]丁鹭飞.雷达原理[M].西安:西安电子科技大学出版社,2001:15-21.(DINGLufei.Radarprinciple[M].Xi'an,China:Xidian University Press, 2001:15-21.)