Accession Number : ADD014786

Title :   Split Beam Sonar.

Descriptive Note : Patent, Filed 27 Sep 71, patented 1 Jan 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Pipkin, Edward L ; Salsman, Garrett G

Report Date : 01 Jan 1991

Pagination or Media Count : 9

Abstract : A sonar system is disclosed that includes contiguously angularly disposed and oppositely rotated transmitting and receiving transducers for broadcasting an acoustic signal and for receiving target echoes thereof, respectively, at different angles from within overlapping zones thereof within an aqueous medium. A gated transmitter is employed to timely energize said transmitting transducer, and a gated target seeking receiver is employed to process the output signal of said receiving transducer. A cathode ray tube readout displays target signals from said receiver. A light sensitive probe produces an electrical output signal in response to a target signal displayed on said cathode ray tube which is used for gating the aforesaid transmitter and receiver in such manner as to accentuate the displayed target signal being probed at any given instant. (Author)

Descriptors :   ACOUSTIC SIGNALS, BEAM SPLITTING, CATHODE RAY TUBES, DISPLAY SYSTEMS, ELECTRICITY, GATES(CIRCUITS), HOMING, LIGHT, OUTPUT, PROBES, RECEIVERS, SENSITIVITY, SIGNALS, SONAR, TARGET ECHOES, TARGETS, TRANSDUCERS, TRANSMITTERS, TRANSMITTING, WATER

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE