摘要
在现代的雷达信号中,线性调频(LFM)信号由于其具有较大的时间带宽积和较强的分辨力而广泛应用,因此其脉内参数的分析至关重要。提出"分段+瞬时频率估计+最小二乘线性拟合+起始频率补偿"的雷达信号脉内分析框架,进而在LFM信号的基础上,利用Rife算法作为瞬时频率估计的算法,对LFM信号的起始频率以及调频斜率等参数进行相应的性能分析,最终实现LFM信号的脉内参数的精确测量。
In modern radar signals,the linear frequency modulation （LFM） signal is widely used due to its large time band width product and strong resolution, so the analysis of intra pulse parameters of LFM signal is very important.This paper proposes an intra pulse parameter analysis framework of ＂section ＋ instantaneous frequency evaluation ＋ least square linear fit ＋ start frequency corn pensation＂ ,in the meantime,on the basis of the LFM signal,the Rife algorithm is used as instanta neous frequency evaluation algorithm for the corresponding performance analysis to initial frequency and frequency modulation slope, etc. of LFM signal.Finally, the intra pulse parameter of LFM signal is measured accurately.
作者
王娟娟
王瑞
李珂
宋健强
WANG Juan juan;WANG Rui;LI Ke;SONG Jian qiang(Yantai University,Yantai 264005,China)
出处
《舰船电子对抗》
2018年第4期36-39,48,共5页
Shipboard Electronic Countermeasure
基金
烟台大学研究生科技创新基地
项目编号:YDYB1722
关键词
线性调频信号
Rife算法
最小二乘线性拟合
linear frequency modulation signal
Rife algorithm
least square linear fit
