一种窄带干扰下的波形设计方法  

A Waveform Design Method under Narrow-band Interference

作　　者：张磊 曹文杰 钱乔龙 杨安东 ZHANG Lei;CAO Wen-jie;QIAN Qiao-long;YANG An-dong(The 8th Research Academy of CSSC,Yangzhou 225101,China)

机构地区：[1]中国船舶集团有限公司第八研究院,江苏扬州225101

出　　处：《舰船电子对抗》2022年第3期67-70,共4页Shipboard Electronic Countermeasure

摘　　要：高频雷达工作的恶劣环境促进了窄带干扰情况下波形设计的研究。采用认知雷达的思路进行波形设计,通过感知工作环境的功率谱分布,主动避开受到干扰的频段,减少后期信号处理为抗干扰带来的损失。这种特殊设计的波形距离旁瓣较高,采用凸优化的方法进行波形优化,通过反复迭代来降低距离旁瓣。根据窄带干扰情况下的功率谱分布进行波形仿真,对比凸优化前后的距离旁瓣,验证了该方法的有效性。The harsh working environment of high frequency radar promotes the research into waveform design under the condition of narrow-band interference.This paper adopts the idea of cognitive radar to carry out the waveform design,actively avoids the disturbed frequency band by sensing the power spectrum distribution of the working environment,and reduces the loss caused by anti-interference in later signal processing.The specially designed waveform has a higher distance side-lobe.The convex optimization method is used for waveform optimization,and the distance sidelobe is reduced through repeated iterations.The waveform simulation is carried out according to the power spectrum distribution under narrow-band interference,and the effectiveness of the method is verified by comparing the range side-lobes before and after convex optimization.

关 键 词：波形设计 凸优化 距离旁瓣 功率谱 

分 类 号：TN973.3[电子电信—信号与信息处理]