修正Hankel矩阵SVD用于多模环境杂波对消研究  

A Study on Clutter Cancellation Method Based on Modified Hankel Matrix Singular Value Decomposition

作　　者：鲁晓倩[1] 孙荣 

机构地区：[1]电子科技大学信息中心,成都611731 [2]苏州简约纳电子有限公司,江苏苏州215021

出　　处：《现代雷达》2012年第3期26-29,共4页Modern Radar

基　　金：中央高校基本科研业务费专项资金资助项目(ZYGX2009J095)

摘　　要：针对超视距雷达多模传播下杂波展宽导致的慢速目标掩盖问题,直接在多模情况下进行杂波对消与目标检测。分析了基于Hankel矩阵奇异值分解(SVD)的海杂波对消方法,指出了该方法存在的不足,并通过设置判决门限进行修正。实验结果显示,采用基于修正的Hankel矩阵SVD的海杂波对消技术,能够实现对目标的检测。The target detection under the condition of multi-mode propagation of Over-the-horizon-radar （OTHR） is studied. For case that multi-mode echoes have completely different phase disturbances, a clutter cancellation method based on hankel matrix singular value decomposition（SVD） is proposed, and the reason why this method cann＇t work at any condition is analyzed. A clut- ter cancellation method based on modified hankel matrix singular value decomposition （SVD） is proposed. By introducing two threshold decision criteria to selectively set the singular value to zero, and then detect the target. Simulation results show that the ocean clutter signal can be substantially suppressed and the target is apparently unaffected.

关 键 词：多模传播 奇异值分解 门限 杂波对消 

分 类 号：TN958.93[电子电信—信号与信息处理]