Patent ID: 7266044
Filing Date: 2007-09-04
Classification: G01S,H04R

Abstract:
1. An apparatus comprising: a horizontal line array comprising a plurality of hydrophones for receiving a target acoustic signal from a target and an interference acoustic signal from an interference source; and a processor cooperating with said horizontal line array, said processor detecting the target, at least in art by compensating for at least one of target motion and interference motion, wherein said target motion comprises at least one of target bearing and target ranging, and wherein said interference motion comprises at least one of interference bearing and interference ranging, said target comprising a target bearing rate and a target range rate, said interference source comprising an interference bearing rate and an interference range rate, and said processor suppressing the interference acoustic signal based on a difference between at least one of the target bearing rate and the target range rate, and at least one of the interference bearing rate and the interference range rate, and wherein said processor determines a beam covariance matrix for the target from a plurality of hydrophone covariance matrices corresponding to said plurality of hydrophones.