TDOA中几种时延估计算法的比较

在现有的传声器阵列声源定位方法中,基于声达时间差(TDOA)估计定位法计算量较小,定位精度较高,同时也易于实现实时系统,是目前声源定位法中常用的方法。采用该方法最重要的就是进行时间延迟估计(TDE),其精确性直接影响到定位的准确与否。概括了基于传声器阵列的声达时间差(TDOA)估计定位法中几种时间延迟估计的算法,给出了部分算法的仿真结果,分析了每种算法中存在的优缺点并同时指出了需进一步研究的问题。

Comparison of Several Time Delay Estimation Algorithms for TDOA

The localization method based on time difference of arrival(TDOA)has less computation load and higher location accuracy among existing methods based on microphone array.Meantime,it also tends to achieve real time system and it is a common method for sound source localization today.The most important part for this way is taking the(TDE),whose accuracy directly determines whether the location is correct.This paper describes several algorithms of time delay estimation for(TDOA)based on microphone array,and provides a part of simulation results corresponding to each algorithm,and analyzes the advantages and the disadvantages for each algorithm.Meantime,it also points out the problem which needs to be studied further.