二维相扫星载降水测量雷达地杂波抑制方法  

A Ground Clutter Suppression Method for 2D Phased Array Space-borne Precipitation Measurement Radar

作　　者：明文华[1] 

机构地区：[1]华东电子工程研究所,合肥230031

出　　处：《现代雷达》2009年第7期23-27,共5页Modern Radar

摘　　要：星载降水测量雷达(SPR),在检测气象目标过程中,最大的困难就是强烈的地杂波和海杂波,而对SPR地杂波的抑制要以抑制其副瓣杂波为主。通过分析SPR副瓣杂波的产生过程发现:综合方向图与地面/海面后向反射系数的乘积对副瓣杂波强度影响较大。因此,文中提出一种针对二维相扫SPR的波束倾斜法来抑制其地杂波。仿真结果表明:该方法能有效抑制SPR地杂波,并能提高可检测单元的个数。One of the big troubles while detecting meteorological targets by a Space-borne Precipitation Radar （SPR） is strong ground clutter and sea clutter and the most important task is the sidelobe clutter suppression. Through analysis of the cause of the sidelobe clutter it can be found that the product of the synthesized antenna pattern and back scattering coefficient of the ground or sea influences the sidelobe clutter most. So the ground clutter is suppressed by reducing the product. In this paper, a beam tilt method for 2D phased array SPR to suppress the ground clutter is proposed. Finally, simulation result indicates this method is effective and it increases the number of detectable elements.

关 键 词：星载 降水测量雷达 杂波抑制 

分 类 号：TN959.4[电子电信—信号与信息处理]