DocumentCode :
2957374
Title :
Optimal sensor placement for passive source localization
Author :
Abel, Jonathan
Author_Institution :
Tetra Syst. Inc., Palo Alto, CA, USA
fYear :
1990
fDate :
3-6 Apr 1990
Firstpage :
2927
Abstract :
Estimating the position of a source given the signals received at a sensor array is a basic problem in the fields of acoustics and geophysics. Of interest is how to place the sensors so that the source can be most accurately localized. The Cramer-Rao bound is used as a gauge of the accuracy of source position estimators. A simple geometric interpretation of the Cramer-Rao bound is developed, and subject to geometric constraints, sensor arrangements minimizing bound variance are found. Carter´s optimal arrays yielding minimum range, bearing, and position bound variance subject to the constraint that the sensors lie along a line segment are reproduced without tedious algebraic manipulations or computer-aided maximization. The bound variance of the optimal arrays is seen to be roughly a factor of three smaller than that of commonly used uniformly spaced arrays
Keywords :
acoustic signal processing; detectors; geophysical techniques; parameter estimation; Carter´s optimal arrays; Cramer-Rao bound; acoustics; bound variance; geometric interpretation; geophysics; passive source localization; source position estimators; Acoustic noise; Acoustic sensors; Analysis of variance; Cramer-Rao bounds; Gaussian noise; Geometry; Geophysics; Sensor arrays; Sensor systems; Signal analysis; Signal processing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
ISSN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.1990.116239
Filename :
116239
Link To Document :
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