Title :
A Frequency-Domain Multi-Band Matched-Filter Approach to Passive Diver Detection
Author :
Chung, Kil Woo ; Li, Hongbin ; Sutin, Alexander
Author_Institution :
Stevens Inst. of Technol., Hoboken
Abstract :
This paper considers the problem of passive acoustic detection of a diver in a shallow water environment. A frequency- domain multi-band matched-filter approach to swimmer detection is presented. The idea is to break the frequency contents of the hydrophone signals into multiple narrow frequency bands, followed by time averaged (about half of a second) energy calculation over each band. Then, spectra composed of such energy samples over the chosen frequency bands are correlated to form a decision variable. The frequency bands with highest Signal/Noise ratio are used for detection. The performance of the proposed approach is demonstrated for experimental data collected for a diver in the Hudson River.
Keywords :
hydrophones; matched filters; sonar detection; underwater sound; frequency-domain multiband matched-filter approach; hydrophone signals; multiple narrow frequency bands; passive acoustic detection; passive diver detection; shallow water environment; swimmer detection; Acoustic signal detection; Frequency; Marine technology; Matched filters; Rivers; Sonar equipment; Spectrogram; Testing; Underwater acoustics; Underwater tracking;
Conference_Titel :
Signals, Systems and Computers, 2007. ACSSC 2007. Conference Record of the Forty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-2109-1
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2007.4487426