Accession Number : ADD015713
Title : Acoustic Transducer System.
Descriptive Note : Patent, Filed 28 May 92, patented 16 Feb 93,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Hilliard, Edward J , Jr
Report Date : 16 Feb 1993
Pagination or Media Count : 6
Abstract : An acoustic transducer system employs a seawater return cable as a receiver element. The cable is either open ended or short circuited with the seawater. A carrier frequency is applied at one end of the cable. Acoustic-pressure waves impinging the cable change the characteristic input impedance of the cable. The changes in the impedance amplitude and phase angle are processed to derive information descriptive of the acoustic source.
Descriptors : *TRANSDUCERS, *ACOUSTIC DETECTION, *PATENTS, ACOUSTICS, AMPLITUDE, ANGLES, CABLES, CARRIER FREQUENCIES, FREQUENCY, IMPEDANCE, INPUT, PHASE, PRESSURE, RECEIVERS, SIGNAL PROCESSING
Subject Categories : Electrical and Electronic Equipment
Acoustic Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE