基于数字电视广播信号的无源雷达实验研究  

Experimental Results of Dual-polarization Passive Radar Based on Digital Television Broadcasting Signal

作　　者：刘茂君 郑光勇 艾小锋 LIU Mao-jun ZHENG Guang-yong AI Xiao-feng(Dalian Sergeant School of Air Force Communication, Dalian Liaoning 116600, China State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, Luoyang He＇ nan 471003, China)

机构地区：[1]空军大连通信士官学校,辽宁大连116600 [2]电子信息系统复杂电磁环境效应国家重点实验室,河南洛阳471003

出　　处：《无线电工程》2017年第2期65-68,73,共5页Radio Engineering

基　　金：国家自然基金资助项目(61401491)

摘　　要：针对无源雷达杂波抑制问题,提出了采用空域滤波和双极化通道对消的方法。设计了一套多通道宽带接收与处理系统,选择DTTB数字电视广播信号开展了民航飞机目标探测实验,采用极化和空域滤波方法解决了由于实验系统布站带来的强直达波抑制问题;结合DTTB数字电视广播信号特点给出了分块处理方法中块长度合理选择区间;通过实验数据分析了不同极化通道杂波对消性能,结果表明该无源雷达实验方法能够提升无源雷达探测能力。The spatial filtering and dual-polarized channel cancellation method are proposed for the clutter suppression in the passive radar. A muhichannel wideband receiving and processing system is designed, and the digital television terrestrial broadcasting （DTTB） signal is chosen to carry out civil aircraft target detection experiment. The polarization and spatial filtering methods are used to solve the strong direct path interference suppression problems incurred by the receiving system location; combined with the characteristics of the DTTB signal, the block length selection interval in the block batch processing method for range-Doppler image calculation is given. The clutter cancellation performance of different polarization channels are analysed through the experimental data, and the results show that the proposed method in the passive radar experiment can improve detection performance of the passive radar.

关 键 词：无源雷达 杂波对消 信号处理 极化 

分 类 号：TN929.5[电子电信—通信与信息系统]