Open Access

Energy-Based Collaborative Source Localization Using Acoustic Microsensor Array

EURASIP Journal on Advances in Signal Processing20032003:985029

Received: 9 January 2002

Published: 30 March 2003


A novel sensor network source localization method based on acoustic energy measurements is presented. This method makes use of the characteristics that the acoustic energy decays inversely with respect to the square of distance from the source. By comparing energy readings measured at surrounding acoustic sensors, the source location during that time interval can be accurately estimated as the intersection of multiple hyperspheres. Theoretical bounds on the number of sensors required to yield unique solution are derived. Extensive simulations have been conducted to characterize the performance of this method under various parameter perturbations and noise conditions. Potential advantages of this approach include low intersensor communication requirement, robustness with respect to parameter perturbations and measurement noise, and low-complexity implementation.


target localization source localization acoustic sensors collaborative signal processing energy-based sensor network

Authors’ Affiliations

Department of Electrical and Computer Engineering, University of Wisconsin-Madison


© Copyright © 2003 Hindawi Publishing Corporation 2003