Title :
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
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;
Conference_Titel :
Wireless And Mobile Computing, Networking And Communications, 2005. (WiMob'2005), IEEE International Conference on
Print_ISBN :
0-7803-9181-0
DOI :
10.1109/WIMOB.2005.1512809
