Method and System for Processing Acoustic Signals

摘要

The invention relates to underwater target detection, location and trackingmethods and is directed more particularly to acoustic signal processing methods for signals received by spaced apart first and second signal detectors for determination of range and bearing of an underwater target. (2) Description of the Prior Art The primary objective of underwater acoustic systems is to detect the presence of acoustic signals emitted or reflected from underwater sources, and to provide estimates of parameters associated with the sources, such as range, bearing, and speed. It is known to provide two spaced apart acoustic receivers for receiving signals from a single source. The two receivers typically are hydrophone arrays, including a towed array and a hull-mounted array. The two signals from the two receivers are applied to a comparator which produces an output indicative of the degree of correlation between the two signals.