传感技术学报Issue(11)：1508-1512,5.DOI:10.3969/j.issn.1004-1699.2013.11.008
基于TFDA的有限空间多目标声定位方法
Acoustic Positioning Method for Multiple Targets Based on TFDA in Finite Space
摘要
Abstract
The performance of acoustic positioning method for multiple targets is severely affected by multipath interference in finite space. On the basic analysis of active and passive structures for multiple targets positioning in finite space,single frequency signal intensity extraction based on short-time Fourier transform ( STFT) combined with dual-correlation was applied to measure time frequency difference arrival ( TFDA ) of acoustic signals, and omnidirectional condenser microphones were used for multiple targets positioning experiment. Firstly,pre-amplifier was used for signal pretreatment of acoustic signals received by microphones. Secondly,time frequency difference arrival was calculated by using timing-cycled acoustic signals emitted by anchor node speakers. Finally,hybrid solution method was used for the calculation of self-positioning. The experimental results show that the method can effectively achieve the coordinate of multiple targets in finite space,and the positioning root-mean-square error reaches 5 cm,relative accuracy reaches 3%.关键词
有限空间/多目标/声定位/混合求解/声达时频差Key words
finite space/multiple targets/acoustic localization/hybrid solution/time frequency difference arrival(TFDA)分类
信息技术与安全科学引用本文复制引用
张晋升,李一博,王伟魁,王远..基于TFDA的有限空间多目标声定位方法[J].传感技术学报,2013,(11):1508-1512,5.基金项目
国家自然科学基金项目(61240038) （61240038）
天津市自然科学基金项目(13JCYBJC18000) （13JCYBJC18000）
