Accession Number : ADD018546

Title :   Method and Apparatus for Measuring the Depth of an Underwater Target.

Descriptive Note : Patent, Filed 1 Mar 67, Patented 22 Apr 97,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Weiss, Benjamin F ; Findeisen, Allen G ; Humphrey, Jackson C

Report Date : 22 Apr 1997

Pagination or Media Count : 7

Abstract : A method and apparatus for determining the depth of a marine target relative to the surface of the water which encompasses an analog processing circuit for detecting and analyzing signals reflected respectively from a target and the water surface, a timing and gating circuit respectively responsive to a target echo signal for initiating a timing sequence and to a surface echo signal for terminating the timing sequence, and a depth readout circuit for indicating the depth of the target below the surface at the instant the surface echo signal terminates the timing sequence

Descriptors :   *TARGET SIGNATURES, *TARGET ECHOES, *UNDERWATER TARGETS, WATER, PROCESSING, TARGETS, DEPTH, SEQUENCES, TIME, SURFACES, ECHOES, SIGNALS, CIRCUITS, READ OUT TECHNIQUES, ANALOG SYSTEMS

Subject Categories : Undersea and Antisubmarine Warfare
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE