Accession Number : ADD005116

Title :   Secret Depth Sounder.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Johnston,Thomas F ; Robinson,Aaron Z

Report Date : 25 Apr 1978

Pagination or Media Count : 5

Abstract : The method of measuring depth of a body of water comprising the steps of recording the natural ambient noises at the location where the depth is to be measured, projecting the recorded noises back into the surrounding body of water, receiving the reflection of said projected recorded noises, and correlating the reflected noises with the projected recorded noises delayed in time. (Author)

Descriptors :   *Patents, *Depth finders, Pseudo noise systems, Correlators

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE