NDLI: Research on acoustic source localization using time difference of arrival measurements

Content Provider	IEEE Xplore Digital Library
Author	Shuanglong Liu Chun Zhang Yu Huang
Copyright Year	2012
Description	Author affiliation: Institute of Microelectronics, National Laboratory for Information Science and Technology, Tsinghua University, Beijing, 100084, China (Shuanglong Liu; Chun Zhang; Yu Huang)
Abstract	Time difference of arrival (TDOA) technology has been widely used in positioning and navigation system recently. This paper first introduces and analyzes the basic principle of acoustic source localization using time difference of arrival (TDOA) measurements. Time difference measurement is a key problem in TDOA location method for its accuracy directly determines the position estimation accuracy of the location system. Generalized cross-correlation (GCC) method can weaken the impact of noise on the delay estimation accuracy so this method is adopted in the paper to obtain TDOA measurement by detecting the peak position of the correlation function of two signals. Through the analysis of TDOA location algorithm, an improved Taylor algorithm with 10 iterations is proposed to solve the location coordinate of the acoustic source. This algorithm can achieve a higher accuracy with relatively smaller calculation. In order to forecast system performance, MATLAB simulations are realized for an acoustic source localization system using microphone array. Finally, the implementation of location system and actual test results are presented. In the actual environment, positioning errors are within 3 cm with microphone array element spacing of 50 cm and it is shown the implemented system can be applied to acoustic source localization.
Starting Page	220
Ending Page	224
File Size	848171
Page Count	5
File Format	PDF
ISBN	9781457716010
e-ISBN	9781457716041
DOI	10.1109/MIC.2012.6273317
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Weight measurement Microwave integrated circuits Microphone array Estimation Time difference measurement Position measurement Acoustic source localization Chan algorithm Time frequency analysis Taylor algorithm Time difference of arrival (TDOA) Generalized cross-correlation
Content Type	Text
Resource Type	Article

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