星载GMTI稀疏阵雷达的STAP研究  

Study of STAP for spaceborne GMTI radar of sparse array

作　　者：康雪艳[1] 江碧涛[2] 张云华[1] 云日升[1] 

机构地区：[1]中国科学院空间科学与应用研究中心,北京100080 [2]北京市遥感信息研究所,北京100085

出　　处：《系统工程与电子技术》2007年第9期1460-1463,共4页Systems Engineering and Electronics

摘　　要：针对稀疏阵的欠采样会引起动目标检测盲区的问题,基于星载GMTI(ground moving targets indica-tion)稀疏线阵雷达,分析了多载频稀疏阵雷达的系统模型和空时自适应处理(space time adaptive processing,STAP)的基本原理,考虑了非周期阵列对减少盲区的作用。仿真结果表明采用多载频模式可有效改善稀疏引起的动目标检测盲区。Ground moving targets indication（GMTI） is an important function for spaceborne sparse array radars. To solve the blind-zone problem of detection due to the undersample of sparse array, the basic principle of space time adaptive processing（STAP） and the model of sparse array radar systems with linear array and with multiple carrier frequencies are analyzed. At the same time, aperiodic subarray spacing is considered to mitigate the blind zones. Simulations shows that the MTI blind zones caused by sparse aperture has been effectively reduced by using multiple carrier frequencies.

关 键 词：星载稀疏阵雷达 地面动目标检测 盲区 多载频模式 空时自适应处理 

分 类 号：TN958[电子电信—信号与信息处理]