基于联合稀疏恢复的宽带雷达动目标检测方法  

Detection of Moving Targets for Wideband Radar Based on Joint-sparse Recovery

作　　者：方明[1] 戴奉周[1] 刘宏伟[1] 王小谟[1,2] 秦童[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,西安710071 [2]中国电子科学研究院,北京100041

出　　处：《电子与信息学报》2015年第12期2977-2983,共7页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61271291;61201285);新世纪优秀人才支持计划(NCET-09-0630);全国优秀博士学位论文作者专项资金(FANEDD-201156);中央高校基本科研业务费专项资金资助课题~~

摘　　要：针对宽带雷达目标回波存在越距离单元走动的问题,该文提出一种基于联合稀疏恢复的宽带雷达动目标检测方法。该方法先在频域对回波数据进行预白化处理,抑制杂波;然后在频率-慢时间域推导出目标信号的联合行稀疏表示,并通过联合稀疏恢复算法得到目标的频域估计;最后通过逆傅里叶变换得到目标的时域估计。仿真结果验证了该方法的有效性。Range migration is the basic and troublesome problem in moving target detection for wideband radar. To solve this problem, a detection algorithm of moving targets based on joint-sparse recovery is proposed for wideband radar. Firstly, a prewhitening processing is performed to filter the clutter. Then, a jointly row sparse representation of the wideband signals is derived in frequency/slow-time domain, thus the detection problem is solved via joint-sparse recovery. Finally, by using the inverse Fourier transform, the estimation of the targets scenario is achieved. Numerical results are presented to demonstrate the effectiveness of the proposed algorithm.

关 键 词：宽带雷达 目标检测 越距离单元走动 杂波抑制 联合稀疏恢复 

分 类 号：TN958.92[电子电信—信号与信息处理]