Title :
Broadband source detection and range/depth localization via full-wavefield (matched field) processing
Author :
Hodgkiss, W. ; Brienzo, R.
Author_Institution :
Marine Phys. Lab., Scripps Instn. of Oceanogr., San Diego, CA, USA
Abstract :
The use of full wavefield (matched field) processing techniques in a multipath environment is illustrated. Experimental data consist of the arrivals at a hydrophone array from an explosive source in shallow water. A coherent recombination of the multipath arrivals is performed in order to provide enhanced signal-to-noise ratio for source detection and range/depth localization. Thus, signal-to-noise ratio is enhanced. Range/depth localization information is made available by searching for a peak in the surface formed by plotting beamformer output at all range/depth cells of interest. The results are compared to theoretical predictions of range/depth localization resolution based on the characteristics of the oceanic waveguide
Keywords :
acoustic arrays; acoustic signal processing; hydrophones; oceanographic techniques; signal detection; underwater sound; acoustic signal processing; beamformer output; broadband source detection; data analysis; explosive source; full wavefield processing; hydrophone array; matched field; matched field processing; multipath arrivals; multipath environment; oceanic waveguide; oceanographic techniques; range/depth cells; range/depth localization; shallow water; signal-to-noise ratio; source detection; wavefield processing; Acoustic arrays; Acoustic propagation; Acoustic reflection; Acoustic sensors; Explosives; Position measurement; Sea surface; Sediments; Sensor arrays; Signal resolution; Signal to noise ratio; Sonar equipment; Water resources; Waveguide theory;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.116193
