基于WVD的调频引信瞬时频率估计算法

Instantaneous Frequency Estimation of FM Radio Fuse Based on WVD

摘要:

针对传统的调频引信无法进行连续测距的问题,利用时频分析的方法,研究了引信差频信号瞬时频率估计算法。基于Wigner-Ville分布,分析了WVD最大值法、SPWVD最大值法及Viterbi-SPWVD算法用于提取信号瞬时频率的特点,通过Monte Carlor仿真试验,比较了几种算法的性能,给出了仿真结果。

Abstract:

According to the problem that the triditional FM radio fuse could not detecet the range continuously, a time-frequency method was used to research theinstantaneous frequency estimating algorithms of difference-frequency signal for radio fuse. Based on Wigner-Ville Distribution, the characters of WVD maximal value algorithm, SPWVD maximal value algorithm and Viterbi-SPWVD algorithm on instantaneous frequency estimation were analyzed. Then the performances of the algorithms analyzed above were compared through Monte Carlor simulation, and the results of simulation was given.