强激光与粒子束2024，Vol.36Issue(9)：153-159,7.DOI:10.11884/HPLPB202436.240079
基于时频变换和波形整形的跳频信号参数估计方法
Parameter estimation method for frequency hopping signal based on time-frequency transform and waveform shaping
王川川 1张宽桥 1王满喜1
作者信息
- 1. 电子信息系统复杂电磁环境效应国家重点实验室,河南洛阳 471003
- 折叠
摘要
Abstract
In view of the adverse effect of noise on frequency hopping signal parameter estimation,a frequency hopping signal parameter estimation method based on time-frequency transform and waveform shaping is proposed.The time-frequency ridge is calculated by the short-time Fourier transform of the frequency hopping signal,the waveform shaping of the time-frequency ridge is processed to eliminate the false time-hopping interference caused by noise,and the hopping period sequence is obtained through the time-hopping sequence.The histogram of the hopping period sequence is calculated,and the value with the most occurrence times is selected to calculate the hopping speed of the frequency hopping signal.According to the hopping period sequence,signal of each hop is extracted respectively,and then the frequency is estimated.The effectiveness of the proposed method is verified by experiments,and the ideal estimation results of hopping time,hopping speed and frequency of frequency hopping signal under low signal-to-noise ratio are guaranteed by comprehensive use of time-frequency transformation and waveform shaping technology.关键词
跳频信号/参数估计/波形整形/跳频时刻/跳频速率Key words
frequency hopping signal/parameter estimation/waveform shaping/time hopping/hopping speed分类
信息技术与安全科学引用本文复制引用
王川川,张宽桥,王满喜..基于时频变换和波形整形的跳频信号参数估计方法[J].强激光与粒子束,2024,36(9):153-159,7.
