雷达对抗系统收发隔离技术研究

雷达对抗中电子干扰机发射的干扰信号会耦合到自身的侦察接收机,影响侦察系统的正常工作,为消除这一耦合干扰信号对侦察设备的影响必须采用一定的收发隔离技术。分析了传统收发隔离技术以及自适应的收发隔离新技术,引出空域和时域的两类实现方式,其中包括空域的相控阵干扰置零技术,时域的自适应回波抵消技术、基于系统辨识的干扰消除技术,对各方法进行了评述。

Research into Transmitter-receiver Isolation Technique of Radar Countermeasure System

In radar countermeasure system,the jamming signals transmitted by the electronic jammer may couple to the reconnaissance receiver,which makes it work abnormally.To eliminate the influences of the coupling jamming signals on the reconnaissance equipment,the transmitter-receiver isolation technique must be adopted.This paper analyzes the traditional transmitter-receiver isolation techniques and the new adaptive transmitter-receiver isolation technique,educes two realization modes of space domain and time domain,including phased array jamming resetting technique in space domain,adaptive echo cancellation and interference elimination technique based on system identification in time domain,reviews each method.