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Proceedings Paper

Collection and processing of acoustic and seismic array data for source localization
Author(s): S. Asgari; J. Z. Stafsudd; C. E. Chen; A. Ali; R. E. Hudson; D. Whang; F. Lorenzelli; K. Yao; E. Taciroglu
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Paper Abstract

Distributed sensor networks have been proposed for a wide range of applications. In this paper, our goal is to locate a wideband source, generating both acoustic and seismic signals, using both seismic and acoustic sensors. For a far-field acoustic source, only the direction-of-arrival (DOA) in the coordinate system of the sensors is observable. We use the approximate Maximum-Likelihood (AML) method for DOA estimations from severalacoustic arrays. For a seismic source, we use data collected at a single tri-axial accelerometer to perform DOA estimation. Two seismic DOA estimation methods, the eigen-decomposition of the sample covariance matrix method and the surface wave method are used. Field measurements of acoustic and seismic signals generated by vertically striking a heavy metal plate placed on the ground in an open field are collected. Each acoustic array uses four low-cost microphones placed in a square configuration and separated by one meter. The microphone outputs of each array are collected by a synchronized A/D recording system and processed locally based on the AML algorithm for DOA estimation. An array of six tri-axial accelerometers arranged in two rows whose outputs are fed into an ultra low power and high resolution network-aware seismic recording system. Field measured data from the acoustic and seismic arrays show the estimated DOAs and consequent localizations of the source are quite accurate and useful.

Paper Details

Date Published: 16 September 2005
PDF: 12 pages
Proc. SPIE 5910, Advanced Signal Processing Algorithms, Architectures, and Implementations XV, 59100A (16 September 2005); doi: 10.1117/12.618139
Show Author Affiliations
S. Asgari, Univ. of California, Los Angeles (United States)
J. Z. Stafsudd, Univ. of California, Los Angeles (United States)
C. E. Chen, Univ. of California, Los Angeles (United States)
A. Ali, Univ. of California, Los Angeles (United States)
R. E. Hudson, Univ. of California, Los Angeles (United States)
D. Whang, Univ. of California, Los Angeles (United States)
F. Lorenzelli, Univ. of California, Los Angeles (United States)
K. Yao, Univ. of California, Los Angeles (United States)
E. Taciroglu, Univ. of California, Los Angeles (United States)


Published in SPIE Proceedings Vol. 5910:
Advanced Signal Processing Algorithms, Architectures, and Implementations XV
Franklin T. Luk, Editor(s)

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