Accession Number : ADD004434

Title :   Diver's Pulse Stretch Sonar.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Johnson,Clarence S

Report Date : 09 Aug 1977

Pagination or Media Count : 4

Abstract : Diver carried transducers and electronic instrumentation are provided which will enable a diver to approximate the directional and discriminatory resolution of marine mammals. An ensonifying signal above the audio spectrum is projected and echo signals are digitized. Next, they are transformed to within the audio spectrum to be capable of being resolved by a diver. Consequently, the location, shape and composition of objects may be discerned without visual verification. (Author)

Descriptors :   *Patents, *Sonar equipment, *Diver equipment, Miniaturization, Target position indicators, Underwater targets, Target discrimination

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE