Alliant Techsystems Inc.

William J Wegerer, Ii

Russell D Braunling

Patrenahalli M Narendra

Jonathan C Werder

A sensor for detecting acoustic energy emitted by a target is disclosed. The sensor comprises a housing including a plurality of transducers for receiving acoustic energy. The transducers are randomly deployed within a predetermined area around the housing, forming an array and a self-survey technique is utilized to determine the positions of the sensors. Beamforming techniques are utilized to analyze the acoustic energy detected by the transducers to provide the azimuth of a target and a class estimate of the target. A plurality of sensors may be utilized to provide target location, course and velocity.

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Eden Prairie, MN, United States of America

William J Wegerer, Ii