Error Analysis of a Localization Algorithm for Finite-Duration Events

Author

Daku, Brian L F ; Salt, J. Eric

Author_Institution

Dept. of Electr. Eng., Saskatchewan Univ., Saskatoon, Sask.

Volume

55

Issue

3

fYear

2007

fDate

3/1/2007 12:00:00 AM

Firstpage

1024

Lastpage

1034

Abstract

This paper proposes and examines the performance of an algorithm used to locate a finite time-duration acoustic source that may have a small time-bandwidth product. The localization algorithm hypothesizes a source location and aligns the sensor signals by removing the propagation delay for that hypothesized location. The energy of the sum of the aligned signals is calculated and the hypothesized source location with the maximum energy is the estimate of the source position. The primary contribution of this paper is the development of the expression for the variance of localization error in any specified direction. The variance expression is validated through a comparison with Monte Carlo simulations

Keywords

Monte Carlo methods; acoustic signal processing; error analysis; Monte Carlo simulations; finite time-duration acoustic source; finite-duration events; localization algorithm; localization error; sensor signals; Acoustic arrays; Acoustic signal processing; Array signal processing; Error analysis; Least squares approximation; Position measurement; Propagation delay; Signal processing algorithms; Underwater acoustics; Wideband; Acoustic signal processing; array signal processing; error analysis; finite duration signals; grid search; source localization; variance of error;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/TSP.2006.887568

Filename

4099550