Accession Number : ADD001318
Title : Sonar Broadband Constant Beamwidth Shading Network.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Autrey,Samuel W
Report Date : 03 Dec 1974
Pagination or Media Count : 11
Abstract : The patent describes a beamwidth shading network disposed between a beamformer and the point at which the delayed inputs are summed or the point at which the beam is formed, which includes for each hydrophone in the array a multiplier, a compensating delay and a transversal filter. The transversal filters provide a weighting function for the associated input so that, with the proper weighting function applied, the beam is shaded and forms an essentially rectangular beam pattern for a line array over a broadband of frequencies.
Descriptors : *Sonar arrays, *Patents, Beam forming, Networks, Broadband
Subject Categories : Acoustic Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE