反舰宽带相参雷达的一种抗箔条干扰方法  

Effective anti-chaff jamming method for anti-ship wideband coherent radar

作　　者：刘博[1] 常文革[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073

出　　处：《系统工程与电子技术》2014年第3期440-446,共7页Systems Engineering and Electronics

摘　　要：以反舰制导雷达为背景,研究了宽带线性调频脉冲多普勒雷达的抗箔条干扰方法。首先建立了弹载宽带线性调频相参脉冲雷达的回波模型,推导了距离-多普勒二维像的形成过程;然后分析了宽带相参雷达舰船目标回波与箔条回波的区别,提出了回波距离-多普勒二维像扩展因子和能量均匀度两个特征指标对舰船和箔条进行区分;结合实际应用环境和箔条干扰的特点,设计了抗箔条干扰算法的判决准则,给出了抗箔条干扰算法的实现流程图;最后对实测数据的处理结果证明了抗箔条干扰方法的有效性。An effective anti-chaff jamming method for wideband linear frequency modulation （LFM） pulse Doppler radar which is used for anti ship terminal guidance is presented. First, the echo model of the missile borne wideband coherent LFM pulses radar is built and the rangeDoppler two-dimensional profile of the target is derived. Then the differences between the echoes of a target ship and chaff jamming are analyzed. As a result, two characteristic indexes based on the two-dimensional profile are proposed to distinguish a target ship and chaff jamming. Furthermore, in view of the application environment and the differences between the echoes of the target and the chaff jamming, the judgment principle is designed and the flow chart of the anti-chaff algo rithm is presented. Finally, the performance of the anti-chaff jamming method is assessed by the processing re sult of the measured data.

关 键 词：宽带雷达 脉冲多普勒 扩展目标 箔条 

分 类 号：TN957.7[电子电信—信号与信息处理]