Accession Number : ADD013394
Title : Scanning Beamformer for a Very High Resolution Circular Arc Sonar.
Descriptive Note : Patent, Filed 24 Jun 81, patented 1 Nov 83,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Gilmour, George A
Report Date : 01 Nov 1983
Pagination or Media Count : 10
Abstract : A high resolution scanning beamformer for a soundhead having a circular or a cylindrical array of hydrophones uses charge coupled devices as transversal filters in a plurality of first stage quadrature sampled phase shift steered beamforming modules. In a second, stage, serial-in/serial-out charge coupled devices are used to correct for fill time. The sonar focuses at all nearfield ranges of interest by controllably varying a clocking rate.
Descriptors : *ACOUSTIC ARRAYS, *BEAM FORMING, *HYDROPHONES, *SONAR, *PATENTS, ARRAYS, CHARGE COUPLED DEVICES, CYLINDRICAL BODIES, ELECTROMAGNETIC WAVE FILTERS, HIGH RESOLUTION, SCANNING, TRANSVERSE WAVES
Subject Categories : Acoustic Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE