非均匀线阵多输入多输出雷达成像旁瓣抑方法  

A new sidelobe suppression method for non-uniform linear array MIMO radar imaging

作　　者：王伟[1] 马跃华[1] 郝燕玲[1] 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《电波科学学报》2013年第3期505-509,523,共6页Chinese Journal of Radio Science

基　　金：新世纪优秀人才支持计划(NCET-11-0827);国家自然科学基金资助项目(60704018)

摘　　要：针对非均匀线阵多输入多输出(Multiple Input Multiple Output,MIMO)雷达空间采样率低、成像旁瓣较高的问题,提出了一种基于阵列内插技术的非均匀线阵MIMO雷达成像旁瓣抑制方法.对匹配滤波后MIMO雷达形成的非均匀等效阵列进行虚拟内插处理,将其变换为均匀线阵,在此基础上,再采用反向投影(Back Pro-jection,BP)算法进行成像.理论分析和仿真结果表明:所提方法有效地降低了非均匀线阵MIMO雷达的旁瓣水平,提高了成像质量.To solve the problem of high sidelobe in non uniform linear array multi- ple input multiple output（MIMO） radar, a new method based on array interpolation is proposed to reduce the sidelobe level. First, the non-uniform linear MIMO radar equivalent array formed by matched filter is transformed into uniform linear array, and then the back projection（BP） algorithm is used to achieve high resolution im- age. Both theoretical analysis and simulation results demonstrate that the proposed method is effective to reduce non uniform linear array MIMO radar sidelobe level and improve the imaging quality.

关 键 词：MIMO雷达 雷达成像 阵列内插 旁瓣抑制 

分 类 号：TN958[电子电信—信号与信息处理]