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“目标冶,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.

TN959

国家自然科学基金资助项目(61571344);上海航天科技创新基金资助项目(SAST2015071,SAST2015064)