Accession Number : ADD015494

Title :   Acoustic Transducer System.

Descriptive Note : Patent Application, Filed 28 May 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Hilliard, Edward J

Report Date : 28 May 1992

Pagination or Media Count : 14

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 :   *PATENT APPLICATIONS, *SONAR TRANSDUCERS, ACOUSTIC IMPEDANCE, SEA WATER, WAVEGUIDES, SIGNAL PROCESSING, MODULATION, ACOUSTIC SIGNALS

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE