Cramer-Rao bounds for different vector-hydrophone´s configurations located near a pressure-release boundary

Author

Ahmadi-Shokouh, Javad ; Keshavarz, Hengameh

Author_Institution

Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada

Volume

1

fYear

2005

fDate

22-24 Aug. 2005

Firstpage

9

Abstract

An underwater acoustic vector-hydrophone is employed to solve the passive direction finding problem. A proposed vector-hydrophone configuration consists of three spatially collocated but orthogonally oriented velocity-hydrophones and a collocated pressure-hydrophone. In this paper, different configurations are evaluated to identify an efficient vector-hydrophone configuration which still enables the directional of arrival estimation. The best vector-hydrophone structure is obtained by identifying the necessary and sufficient vector-hydrophone composition nonsingularity in the Fisher information matrix. Recommended for direction finding near a pressure-release boundary are a pressure hydrophone collocated with a collocated pair of x-axis and y-axis velocity hydrophones.

Keywords

direction-of-arrival estimation; hydrophones; matrix algebra; sonar signal processing; underwater sound; Cramer-Rao bounds; Fisher information matrix; directional of arrival estimation; passive direction finding; pressure-release boundary; underwater acoustic vector-hydrophone; Acoustic sensors; Acoustical engineering; Direction of arrival estimation; Java; Pressure measurement; Sensor phenomena and characterization; Sonar equipment; Underwater acoustics; Velocity measurement; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless And Mobile Computing, Networking And Communications, 2005. (WiMob'2005), IEEE International Conference on

Print_ISBN

0-7803-9181-0

Type

conf

DOI

10.1109/WIMOB.2005.1512809

Filename

1512809