Method of self-adaptive clutter canceling through double-waveform phase encoding in PD radar

一种pd雷达中的双波形相位编码自适应杂波对消方法

Abstract

本发明涉及雷达抗无源干扰领域,特涉及一种PD雷达中的双波形相位编码自适应杂波对消方法。本发明通过将雷达发射的固定线性调频信号改为相邻PRI交替发射正负调频斜率的线性调频信号,同时加以慢拍的相位伪随机编码,在接收的信号处理中利用快拍和慢拍的两维匹配滤波,同时加以信号子空间维度的滤波,使得近程杂波得以被滤除,远程的目标被保留,从而达到目标检测的目的。
The invention relates to the field of radar passive jamming resistance, in particular to a method of self-adaptive clutter canceling through double-waveform phase encoding in PD radar. A fixed linear frequency modulation signal emitted by the radar is changed to a linear frequency modulation signal with positive and negative frequency modulation slopes alternately emitted at adjacent PRIs, pseudorandom phase encoding of slow shot is added at the same time, two-dimensional matched filtering of snapshot and slow shot is utilized in the received signal processing, filtering of signal subspace dimension is added at the same time, and therefore short-range clutters are filtered out, long-distance targets are reserved, and the purpose of target detection is achieved.

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    CN-103926572-AJuly 16, 2014西安电子科技大学一种机载非正侧阵雷达用自适应子空间的杂波抑制方法
    CN-104391278-AMarch 04, 2015武汉滨湖电子有限责任公司Radar anti-interference method by utilizing polarization cancellation

NO-Patent Citations (4)

    Title
    JUNG-HYO KIM ET AL.: "Investigation of MIMO SAR for Interferometry", 《PROCEEDINGS OF THE 4TH EUROPEAN RADAR CONFERENCE》
    刘勇等: "基于正交互补序列的瞬时极化测量编码波形设计", 《信号处理》
    周峰等: "基于特征子空间滤波的SAR窄带干扰抑制方法", 《电子与信息学报》
    谢春健等: "调频率正负交替变化的SAR成像及抗欺骗干扰方法", 《计算机应用》

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    CN-105785356-BJanuary 26, 2018航天南湖电子信息技术股份有限公司一种测量多普勒频率的改进方法