舰船目标非网格多散射点距离副瓣迭代抑制算法  

Iterative Sidelobe Suppression Algorithm for Ship Target with Non-gridded Multi-scatter Range

作　　者：徐婧 王玉莹 张劲东[1] 孟凡君[2] XU Jing;WANG Yuying;ZHANG Jindong;MENG Fanjun(College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;Nanjing Marine Radar Institute,Nanjing 211106,China)

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京211106 [2]南京船舶雷达研究所,江苏南京211106

出　　处：《无线电工程》2023年第4期745-753,共9页Radio Engineering

基　　金：国家自然科学基金(62171220)。

摘　　要：针对舰船目标非网格多散射点的距离副瓣高、难以有效抑制的问题,采用改进空间谱估计算法——Multiple Signal Classification(MUSIC)对目标多散射点网格偏移量进行解相干和超分辨估计,在此基础上构建目标非网格多散射点模型,提出一种基于最小均方误差(Minimum Mean Squared Error, MMSE)准则的非网格强散射点距离副瓣抑制算法。仿真和实测数据结果表明,该算法在准确估计非网格偏移量的基础上,能够有效抑制距离非网格多散射点目标的副瓣。To solve the problem of high range sidelobe of ship target with non-grid multi-scatters,which is difficult to be suppressed effectively,the improved MUSIC algorithm is proposed to estimate the mesh offset of multi-scatters of the target by decoherence and super-resolution.On this basis,the non-gridded multi-scatter model of the target is constructed.An iterative sidelobe suppression algorithm based on Minimum Mean Square Error(MMSE)criterion is proposed.The simulation and measurement results show that the proposed algorithm can effectively suppress the sidelobe of the ship target with non-grid multi-scatter on the basis of the accurately estimated non-grid offset.

关 键 词：舰船目标 非网格多散射点 距离副瓣 迭代抑制 最小均方误差 

分 类 号：TN957.51[电子电信—信号与信息处理]