基于子空间投影的相位编码雷达旁瓣抑制方法  

Method for Sidelobe Suppression in Phase-Coded Radar Based on Feature Subspace Projection

作　　者：金淑芳[1] 顾红[2] 盛剑锋[2] 苏卫民[2] 

机构地区：[1]上海水产大学海洋学院,上海200090 [2]南京理工大学电子工程系,南京210094

出　　处：《数据采集与处理》2004年第4期361-364,共4页Journal of Data Acquisition and Processing

基　　金：国家自然科学基金 (60 3 72 0 1 0 )资助项目。

摘　　要：相位编码雷达具有优良的抗干扰和低截获概率特性 ,因此它已得到广泛的研究和应用 ,但该雷达固有的距离旁瓣又会影响多目标情况下的目标检测。本文首先指出了相位编码雷达中大功率信号的距离旁瓣是影响弱小目标检测的根本原因 ;接着给出了一种基于子空间投影在回波视频信号中逐一消除大功率回波信号来改善雷达对弱小目标检测能力的方法 ;然后分析了该方法的基本原理和实现步骤 ,仿真结果证明该方法是有效的。Owing to phase coded radar having good anti jamming capability and low probability of intercept property, its studies and applications are paid more attention. However, in the case of multiple targets, its inherent range sidelobes can affect the detection of weak or stealth targets. This paper points out that the range sidelobes of large target is the essence reason of the difficulty of detecting week targets. Then, based on feature subspace projection, a method for eliminating larget is given. The basic theory and steps of the implementation of the method are analyzed. Simulations prove the effectiveness of the method.

关 键 词：雷达 相位编码 子空间投影 旁瓣抑制 低截获概率 大功率 回波信号 弱小目标检测 仿真结果 抗干扰 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] TN957[自动化与计算机技术—计算机科学与技术]