ASA 129th Meeting - Washington, DC - 1995 May 30 .. Jun 06

4aUW10. Localization of sources of acoustic transients using a broadband matched-field processing technique.

F. D. Tappert

Appl. Marine Phys., Univ. Miami, RSMAS, 4600 Rickenbacker Cswy., Miami, FL 33149

L. Nghiem-Phu

MAC Systems Corp., Miami, FL 33155

By matching, or correlating, a complex-demodulated (envelope) time series measured at a single hydrophone receiver to predicted envelope response functions obtained by back propagation using a full-physics broadband PE model, it is possible to remove multipath distortion effects and to determine the location of the source of an acoustic transient with good resolution and high processing gain. This ``semi-coherent'' broadband matched-field processing (BMFP) technique is demonstrated in several deep water and shallow water situations. [Work supported by ONR and ARPA.]