Accession Number : ADD018544

Title :   Hydrophone for Determining Direction of Underwater Sound

Descriptive Note : Patent Application, Filed 27 Nov 96

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Fisher, Stanley A

PDF Url : ADD018544

Report Date : 27 Nov 1996

Pagination or Media Count : 19

Abstract : The invention is directed to an improved acoustic sensor system for determining the direction of underwater sound signals relative to a user is disclosed. The sensor system includes first and second sensing means for sensing incoming acoustic energy and for providing first and second acoustic energy signals in response thereto; separation means for separating the first and second sensing means a distance S = E(C(sub w)/C(sub A)) where E is substantially equal to the separation distance between the users ears, C(sub w) is the speed of sound in water, and C(sub A) is the speed of sound in air; detector means, operatively connected with the first and second sensing means, for providing first and second output signals in response to the first and second acoustic energy signals; and audio means, operatively connected with the detector means, for providing an audio output to the user in response to the first and second output signals.

Descriptors :   *PATENT APPLICATIONS, *HYDROPHONES, *ACOUSTIC DETECTORS, DIRECTION FINDING, ACOUSTIC VELOCITY, UNDERWATER SOUND SIGNALS

Subject Categories : Information Science
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE