基于压缩感知的时域抗射频干扰方法  

Time-domain Radio Frequency Interference Suppression Method Based on Compressed Sensing

作　　者：李宇环 岳显昌[1] 张兰[1] LI Yu-huan;YUE Xian-chang;ZHANG Lan(School of Electronic Information,Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学电子信息学院,武汉430072

出　　处：《科学技术与工程》2020年第7期2767-2772,共6页Science Technology and Engineering

基　　金：国家自然科学基金(61771352);“十二五”国家863计划项目(2012AA091701,2012AA091702)。

摘　　要：射频干扰是高频地波雷达中一种不可避免的干扰,在海态探测应用中,会对海洋回波信息的提取造成极大困难。基于射频干扰在原始时域数据上的短时性特征,提出了基于压缩感知的时域抗射频干扰方法。该方法利用少量的无干扰采样数据即可对干扰数据段的海洋回波进行估计,以完成射频干扰抑制。经过仿真和实测数据的检验,射频干扰被完全抑制且海洋回波保持完好,表明该方法对射频干扰有良好的抑制效果。Radio frequency interference(RFI),which can limit the extraction of the ocean echo information in the application of sea state detection,is an inevitable problem in high-frequency surface wave radar(HFSWR).Based on the short-time characteristics of RFI in the original time-domain data,a time-domain RFI suppression method based on compressed sensing(CS)was proposed.This method estimated the ocean echoes in the interference data segment with a few of interference-free samples to suppress RFI.Through the test of simulation and measured data,RFI was completely suppressed and the ocean echoes remained intact,which indicates that the proposed method can achieve good performance on RFI suppression.

关 键 词：高频地波雷达 压缩感知 短时性 射频干扰抑制 海洋回波 

分 类 号：TN958.93[电子电信—信号与信息处理]