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