基于维特比算法的引信多普勒信号频率估计方法  

Fuze Doppler Signal Frequency Estimation Based on Viterbi Algorithm

作　　者：王正顺 宋萍[1] 唐强[2] 余孝安[2] WANG Zhengshun;SONG Ping;TANG Qiang;YU Xiaoan(School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081 China;Xi'an Institute of Electromechanical Information Technology, Xi'an 710065,China)

机构地区：[1]北京理工大学机电学院,北京100081 [2]西安机电信息技术研究所,陕西西安710065

出　　处：《探测与控制学报》2021年第4期36-41,共6页Journal of Detection & Control

基　　金：国防科工局基础科研类项目资助(JCKY2017208B009)。

摘　　要：针对目前在靶场试验中光学测量、声学测量、GPS测量等脱靶量测量方法需要配备专用设备,数据处理比较复杂,且不能在试验后快速提供测量结果,以及无线电测量方法中试后多普勒信号频率估计时存在的问题,提出基于维特比算法的引信多普勒信号频率估计方法。该方法能够处理连续波体制无线电引信获得的多普勒回波信号,利用改进的维特比(Viterbi)方法提取其时频特征点,然后按照多普勒信号的函数模型进行拟合分析,可以得到多普勒信号的函数估计,进而可以得到脱靶量的参数估计。仿真实验结果表明,在信号中存在一定噪声干扰的情况下,新型多普勒频率估计方法在估算连续波无线电引信多普勒信号的频率和脱靶量参数时具有较高的准确度和抗噪声能力。At present optical measurement,acoustic measurement,GPS measurement and other miss distance measurement methods need special equipment in the range test,and the data processing is complex,so the results cannot be provided in time after the test,as well as the problems existing in Doppler signal frequency estimation method of the radio measurement method.This paper presented a frequency estimation method of fuze Doppler signal based on Viterbi algorithm,which could process the Doppler echo signal of continuous wave radio fuze,extracted the time-frequency feature points by using the improved Viterbi method to fit and analyze the Doppler signal according to the function model of the Doppler signal,so as the estimation function of the Doppler signal and the estimated value of miss distance could be obtained.The simulation test results showed that the new Doppler frequency estimation method proposed in this paper had high accuracy and anti-noise ability in estimating the Doppler signal frequency and miss distance parameters of continuous wave radio fuze signal with certain noise interference in the signal.

关 键 词：引信信号处理 无线电多普勒效应 瞬时频率估计 脱靶量 

分 类 号：TN98[电子电信—信息与通信工程]