步进频率探测信号旁瓣抑制方法研究  

Research on Sidelobe Suppression of Stepped Frequency Detection Signal

作　　者：何熹 HE Xi(Henan Jiuyu Tenglong Information Engineering Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]河南九域腾龙信息工程有限公司,郑州450000

出　　处：《火力与指挥控制》2021年第4期131-135,共5页Fire Control & Command Control

摘　　要：为了提高步进频率雷达系统的性能,研究了步进频率雷达的距离旁瓣抑制问题。给出了步进频率雷达信号频域加权的流程图,详细推导了数学表达式,阐述了步进频率雷达距离旁瓣抑制的机理。通过理论分析和仿真验证,通过增加Hamming窗函数和增加一定阶跃值进行补偿,可以减小主瓣宽度和副瓣峰值,效果较好。分析了步进频率雷达的工作原理及距离旁瓣产生的原因。重点研究了基于各种窗函数的距离旁瓣抑制。结合距离旁瓣的基本抑制机理和各窗函数的特点,提出了基于各窗函数线性加权法的距离旁瓣抑制的研究与分析。In order to improve the performance of stepped frequency radar system,the problem of range sidelobe suppression of stepped frequency radar is studied in this paper.The flow chart of stepped frequency radar signal weighting in frequency domain is given,and the mathematical expression is deduced in details,and the mechanism of range sidelobe suppression of stepped frequency radar is expounded.Through theoretical analysis and simulation verification,by adding Hamming window function and increasing a certain amount of step value to make a compensation,the width of main lobe and the peak value of side lobe can be reduced,and the effect is better.This paper analyzes the working principle of stepped frequency radar and the cause of generating the range sidelobe.Then,it focuses on the study of range sidelobe suppression based on various window functions.Combined with the basic suppression mechanism of range sidelobe and the characteristics of each window function,the research and analysis of range sidelobe suppression based on linear weighting method of various window functions are put forward.

关 键 词：步进频率 距离旁瓣产生 距离旁瓣抑制 加窗函数 线性加权 

分 类 号：TN951[电子电信—信号与信息处理]