雷达仙波的抑制方法研究
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摘要
仙波在特殊的气候条件下出现,会导致雷达终端显示器出现成片的慢速运动"目标",从而严重影响雷达的性能。文中结合某中重频雷达的实测数据,分析了雷达实测数据中仙波的特征,根据仙波的多普勒频率特征提出了分别基于自适应动目标显示、自适应动目标检测(MTD)处理的仙波抑制方法。由于仙波的多普勒频率未知,提出一种在MTD处理基础上对检测结果所在多普勒通道进行简单判断的仙波抑制方法。实测数据处理结果表明,三种方法都对仙波具有良好的抑制作用。
Angel clutter is always regarded as slow moving targets when appearing on radar terminal under special weather. And it will seriously degrades the detection performance of radar. In this paper,the characteristics of angel clutter are analyzed with real data of MPRF radar.And the suppression methods of angel clutter based on adaptive MTI and adaptive MTD are proposed according to the doppler frequency property of angel clutter. Moreover,because the doppler frequency of angel clutter is unknown,another suppression method based on detecting doppler channel of the MTD results is proposed. The real data processing results verify that all three methods can suppress angel clutter effectively.
Angel clutter is always regarded as slow moving targets when appearing on radar terminal under special weather. And it will seriously degrades the detection performance of radar. In this paper,the characteristics of angel clutter are analyzed with real data of MPRF radar.And the suppression methods of angel clutter based on adaptive MTI and adaptive MTD are proposed according to the doppler frequency property of angel clutter. Moreover,because the doppler frequency of angel clutter is unknown,another suppression method based on detecting doppler channel of the MTD results is proposed. The real data processing results verify that all three methods can suppress angel clutter effectively.
引文
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[4]方青,陈磊.一种雷达仙波点迹抑制方法[J].雷达科学与技术,2016,14(5):483-486.FANG Qing,CHEN Lei. A suppression method for radar angel track[J]. Radar Science and Technology,2016,14(5):483-486.
[5]张飚,张仕元.警戒雷达仙波特征分析[J].现代雷达,2008,30(6):65-68.ZHANG Biao,ZHANG Shiyuan. Angel character analysis based on surveillance radar[J]. Modern Radar,2008,30(6):65-68.
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[7] STOICA P,BABU P,LI J. New method of sparse parameter estimation inseparable models and its use for spectralanalysis of irregularly sampled data[J]. IEEE Transactions on Aerospace and Electronic Systems,2010,12(5):522-529.
[8] YARDIBI T,LI J,STOICA P,et al. Source localization and sensing:anonparametric iterative adaptive approach based on weighted least squares[J]. IEEE Transactions on Aerospace and Electronic Systems,2010,46(1):425-430.
[9]陈伯孝.现代雷达系统分析与设计[M].西安:西安电子科技大学出版社,2012.CHEN Baixiao. Modern radar system analysis and design[M]. Xi'an:Xidian University Press,2012.
[2] KLEMBOWSKI W. Experimental study of polarization influence on angels intensity[C]//IEEE International Radar Conference. Arlington,VA:IEEE Press,1990:362-364.
[3] VETROV V I,SKVORSOW V S,TANYGIN A A,et al. On possibility of radar angel-echoes study with sodar and RASS techniques[C]//IET Internationanl Radar Conference. Edinburgh:IET Press,1997:46-49.
[4]方青,陈磊.一种雷达仙波点迹抑制方法[J].雷达科学与技术,2016,14(5):483-486.FANG Qing,CHEN Lei. A suppression method for radar angel track[J]. Radar Science and Technology,2016,14(5):483-486.
[5]张飚,张仕元.警戒雷达仙波特征分析[J].现代雷达,2008,30(6):65-68.ZHANG Biao,ZHANG Shiyuan. Angel character analysis based on surveillance radar[J]. Modern Radar,2008,30(6):65-68.
[6] POLLEN G E. Distribution of radar angels[J]. IEEE Transactions on Aerospace and Electonic Systems,1972,8(6):721-727.
[7] STOICA P,BABU P,LI J. New method of sparse parameter estimation inseparable models and its use for spectralanalysis of irregularly sampled data[J]. IEEE Transactions on Aerospace and Electronic Systems,2010,12(5):522-529.
[8] YARDIBI T,LI J,STOICA P,et al. Source localization and sensing:anonparametric iterative adaptive approach based on weighted least squares[J]. IEEE Transactions on Aerospace and Electronic Systems,2010,46(1):425-430.
[9]陈伯孝.现代雷达系统分析与设计[M].西安:西安电子科技大学出版社,2012.CHEN Baixiao. Modern radar system analysis and design[M]. Xi'an:Xidian University Press,2012.