一种基于正交编码的天基雷达空中目标检测方法  

A New Method for Airborne Target Detection Using Polyphase Code for Space-based Radar

作　　者：张牙[1] 王岩飞[1] 闫鸿慧[1] 

机构地区：[1]中国科学院电子学研究所,北京100080

出　　处：《南京邮电大学学报（自然科学版）》2009年第1期19-22,28,共5页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

摘　　要：天基雷达由于工作于下视模式,天基雷达接收到的目标回波信号往往会淹没在地球杂波背景中。分析了天基雷达地杂波的产生原因,提出了低PRF时天基雷达空中动目标检测的无杂波区域,然后结合正交编码方式,提出了一种基于正交编码技术的空中目标检测方法。该方法不需要进行复杂的杂波抑制处理,可在一定程度上解决下视雷达面临的强地杂波问题。The use of space based radar for the detection of airborne or even ground moving targets offers an important advantage, namely wide area coverage including areas denied to airborne radars. This paper aims to solve this problem by analyzing the mechanism of clutter generating process and no clutter area of space based radar. Then using the polyphase code, an new method for space based radar airborne target detection is introduced. Compared to conventional target detection method, the new method has a simpler arithmetic and can properly solve the earth clutter.

关 键 词：天基雷达 空中动目标检测 杂波消除 

分 类 号：TN959.74[电子电信—信号与信息处理]