天空双基地雷达杂波建模与分析  

Modeling and Analysis of Clutter for Space-Air Based Bistatic Radar

作　　者：袁博资 王力宝[1] 袁俊泉[1] 高飞[1] 马晓岩[1] 

机构地区：[1]空军预警学院,湖北武汉430019

出　　处：《信号处理》2015年第5期611-620,共10页Journal of Signal Processing

基　　金：学院创新基金重大专项;国家自然科学基金(61201451)

摘　　要：天空双基地雷达作为天基预警雷达体制的一种,能在一定程度上克服单基地天基预警雷达信号空间衰减过大的问题,但天空双基地雷达杂波谱会更为复杂。本文在天空双基地雷达几何模型的基础上,首先对杂波几何关系、多普勒特性及杂波回波数学模型进行了分析。进而对天空双基地雷达在考虑地球自转、不同几何配置及不同收发端相对位置等情况下的杂波空时二维谱进行了建模与仿真,并与双基地机载雷达进行了比较。结合理论与仿真结果,表明所建杂波模型是合理的,可为天空双基地雷达杂波抑制技术研究提供参考。Space-air based bistatic radar,one kind of space-based radar（ SBR）,in some extent can solve the problem of high space attenuation of space-based monostatic radar. However,the clutter spectrum of space-air based bistatic radar is more complicated. Based on the geometric model of space-air based bistatic radar,this paper analyzed the clutter geometrical relationship,clutter Doppler property and mathematical model. Then modeling and simulation of space-time clutter spectrum are given under the condition of earth rotation,different geometric configuration and different transmitter-receiver＇s position,and compared with that of airborne bistatic radar. The rationality of the clutter model is illustrated by the theory and simulation result,which can provide reference for clutter suppression of space-air based bistatic radar.

关 键 词：天空双基地雷达 杂波 多普勒特性 空时二维谱 几何配置 

分 类 号：TN959.74[电子电信—信号与信息处理]