低频宽带SAR/GMTI试验系统  

Low Frequency Wide Band SAR/GMTI Experimental System

作　　者：周智敏[1] 周红[1] 雷鹏正[1] 黄晓涛[1] 常玉林[1] 朱国富[1] 范崇祎[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2011年第6期72-77,共6页Journal of National University of Defense Technology

基　　金：国家部委资助项目;教育部新世纪优秀人才支持计划资助项目(NCET-07-0223)

摘　　要：低频宽带SAR/GMTI能对开阔或叶簇覆盖地区的静止和运动目标进行侦察、监视及成像。详细介绍了低频宽带SAR/GMTI系统及其信息处理过程,讨论了其中的谱修正、成像及通道均衡等问题;针对系统的低载频特性,采用了STAP、DPCA结合ATI、图像域STAP 3种GMTI方法。外场试验证明,该系统能够有效地抑制杂波,检测运动目标,并估计运动目标参数。Low frequency wide band SAR/GMTI has the capabilities of reconnaissance,surveillance and imaging for stationary and moving targets in the area open or concealed by foliage.A low frequency wide band SAR/GMTI system,developed by National University of Defense Technology,was introduced in detail as well as the information processing procedures.Important issues in the procedures such as spectrum correction,imaging and channel equalization were discussed.Three GMTI methods-STAP,DPCA combined with ATI and image domain STAP-were chosen in consideration of the low frequency property in the system.It is verified through the outfield experiment that the system can effectively suppress clutter,detect moving target and estimate its motion parameters.

关 键 词：低频 合成孔径雷达 地面运动目标指示 

分 类 号：TN959.73[电子电信—信号与信息处理] TN959.1[电子电信—信息与通信工程]