基于RLS横向滤波自适应抵消法的直达波抑制  

Direct Wave Suppression Based On Adaptive Interference Canceling Method

作　　者：高守传[1] 黄春琳[1] 粟毅[1] 

机构地区：[1]国防科技大学电子科学与工程学院,长沙410073

出　　处：《信号处理》2004年第6期566-571,共6页Journal of Signal Processing

摘　　要：直达波(收发天线耦合波、表面直接反射波)由于其具有很强的能量对近场瞬态测量系统--表层穿透雷达(SPR)目标回波信号造成了严重干扰。本文根据各测点直达波的强相关性,采用自适应抵消法去除直达波。处理结果表明自适应抵消法能够有效的抑制直达波,抑制了4ldB;提高目标回波的信干比(SIR),由.5.5dB提高到了6.2dB。同时该方法对直达波局部畸变以及幅度、时延的变化具有很强的适用性。The direct wave (including the TX/RX coupled wave, the reflected wave from the surface), because of its greatenergy., has great effect to the system performance of the near field transient signal measurement system--Surface PenetratingRadar(SPR). Based on the strongly correlation of the direct wave, we applied the adaptive interference canceling method to remove it. It's found that this method can remove the direct wave effectively, and therefore increases Signal to Interference Ratio dramatically(SIR).

关 键 词：直达波 抵消 表层穿透雷达 自适应 信干比 RLS 天线 消法 抑制 法能 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TN959[自动化与计算机技术—计算机科学与技术]