时延估计方法的分析

Analysis and survey of algorithms for time-delay estimation

摘要: 对国内外时延估计的最新研究现状及各种算法进行研究,在研究了大量时延估计文献的基础上,,分析了广义相关法、广义相位谱法、自适应算法及其改进算法,分析了各种算法之间的关系以及各自的特点。重点论述了现代信号处理算法与时延估计算法相结合的各种时延估计方法及其在非平稳信号中的应用,同时,分析了带宽对时延估计精度的影响及宽带信号的时延估计方法,指出了时延估计算法还需要进一步研究的方向。

Abstract: Some algorithms of time delay estimation,such as the generalized cross correlation,the generalized phase spectrum,the adaptive time delay estimation and its reformative algorithm,are analyzed on the basis of studying a large number of literatures regarding time delay estimation.And the methods of combining modern signal processing and time delay estimation algorithm are emphasized.Then,the time delay estimation of wide-band signal is specially discussed because of its particularity.Finally the direction of further studying the time delay estimation algorithms is pointed out.