机载双基雷达杂波分类及抑制方法
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摘要
机载双基雷达杂波的空时分布受双基构型影响大,且具有非常严重的距离依赖性。对复杂的机载双基雷达杂波进行分类分析和抑制方法研究具有重要的意义。先对机载双基雷达杂波进行建模仿真,对于杂波分布与构型相关的现象,根据双基构型和对应的杂波分布对机载双基雷达杂波作出了较为一般化的分类,并分析讨论了不同类型杂波分布特性;针对具有严重距离依赖性的机载双基雷达杂波,提出了训练单元协方差矩阵加权平均的方法。相比于传统训练单元协方差矩阵求和平均的方法,算法仿真证明改进的算法在3类构型下的杂波抑制效果均有明显的提高,为双基雷达杂波抑制提供了新的处理方法。
The space-time distribution of airborne bistatic radar clutter is influenced greatly by bistatic configuration and has severe range dependency.It is very important to study the clutter characteristics and corresponding clutter suppression methods in different bistatic configurations.In this paper,airborne bistatic radar clutter is modeled and simulated.Aiming at the clutter related to bistatic configuration,we present a relatively general classification of clutter associating with different bistatic configurations.In addition,we analyze and discuss the clutter distribution characteristics of different types.Aiming at the airborne bistatic radar clutter of severe range dependence,this paper proposes a weighted average method of covariance matrix of training unit.Compared with traditional methods,the simulation results show that the improved algorithm has improved the clutter suppression effect under three types of configurations,and provides a new processing method for bistatic radar clutter suppression and target detection.
The space-time distribution of airborne bistatic radar clutter is influenced greatly by bistatic configuration and has severe range dependency.It is very important to study the clutter characteristics and corresponding clutter suppression methods in different bistatic configurations.In this paper,airborne bistatic radar clutter is modeled and simulated.Aiming at the clutter related to bistatic configuration,we present a relatively general classification of clutter associating with different bistatic configurations.In addition,we analyze and discuss the clutter distribution characteristics of different types.Aiming at the airborne bistatic radar clutter of severe range dependence,this paper proposes a weighted average method of covariance matrix of training unit.Compared with traditional methods,the simulation results show that the improved algorithm has improved the clutter suppression effect under three types of configurations,and provides a new processing method for bistatic radar clutter suppression and target detection.
引文
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[14]同亚龙,王彤,文才,等.一种稳健的机载非正侧视阵雷达杂波抑制方法[J].电子与信息学报,2015,37(5):1044-1050.
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[17]高惠雯.机载非协作雷达杂波建模与STAP研究[D].成都:电子科技大学,2017.
[18]袁俊泉,袁博资,王力宝,等.天空双基雷达回波空时二维建模与分析[J].系统工程与电子技术,2016,38(1):64-69.
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[21]任娅.机载雷达非自适应杂波抑制方法及应用研究[D].西安:西安电子科技大学,2015.
[2]段锐.机载双基地雷达杂波仿真与抑制技术研究[D].成都:电子科技大学,2009.
[3]刘霞飞.雷达杂波分类与抑制技术研究[D].西安:西安电子科技大学,2015.
[4]KLEMM R.Comparison Between Monostatic and Bistatic Antenna Configurations for STAP[J].IEEE Trans on Aerospace and Electronic Systems,2000,36(2):596-608.
[5]彭晓瑞,谢文冲,王永良.双基地机载雷达杂波建模及仿真分析[J].系统仿真学报,2011,23(2):257-261.
[6]谢文冲,段克清,王永良.机载雷达空时自适应处理技术研究综述[J].雷达学报,2017,6(6):575-586.
[7]赵军,沈明威,朱岱寅,等.一种改进的机载双基雷达多普勒频移算法[J].郑州大学学报(工学版),2015,36(2):75-79.
[8]SHEN Mingwei,YU Jia,WU Di,et al.An Efficient Adaptive Angle-Doppler Compensation Approach for Non-Sidelooking Airborne Radar STAP[J].Sensors,2015,15(6):13121-13131.
[9]冯为可,张永顺,张丹.一种新的角度多普勒补偿方法[J].西安电子科技大学学报(自然科学版),2015,42(6):158-163.
[10]赵军,田斌,朱岱寅.基于PAST处理的机载双基雷达自适应角度-多普勒补偿算法[J].雷达学报,2017,6(6):594-601.
[11]HAYWARD S D.Adaptive Beamforming for Rapidly Moving Arrays[C]∥International Radar Conference,Beijing:IEEE,1996:480-483.
[12]KLEMM R.Adaptive Airborne MTI:An Auxiliary Channel Approach[J].IEE Proceedings F:Communications,Radar and Signal Processing,1987,134(3):269-276.
[13]WANG Hong,CAI Lujing.On Adaptive SpatialTemporal Processing for Airborne Surveillance Radar Systems[J].IEEE Trans on Aerospace and Electronic Systems,1994,30(3):660-670.
[14]同亚龙,王彤,文才,等.一种稳健的机载非正侧视阵雷达杂波抑制方法[J].电子与信息学报,2015,37(5):1044-1050.
[15]刘红亮.机载雷达非均匀检测和杂波抑制方法研究[D].西安:西安电子科技大学,2016.
[16]BRENNAN L E,REED I S.Theory of Adaptive Radar[J].IEEE Trans on Aerospace and Electronic Systems,1973,AES-9(2):237-252.
[17]高惠雯.机载非协作雷达杂波建模与STAP研究[D].成都:电子科技大学,2017.
[18]袁俊泉,袁博资,王力宝,等.天空双基雷达回波空时二维建模与分析[J].系统工程与电子技术,2016,38(1):64-69.
[19]KLEMM R.Space-Time Adaptive Processing:Principles and Applications[J].Electronics and Communications Engineering Journal,1999,11(4):172.
[20]REED I S,MALLETT J D,BRENNAN L E.Rapid Convergence Rate in Adaptive Arrays[J].IEEE Trans on Aerospace and Electronic Systems,2007,AES-10(6):853-863.
[21]任娅.机载雷达非自适应杂波抑制方法及应用研究[D].西安:西安电子科技大学,2015.