Accession Number : ADD003279

Title :   A Device for Measuring the Velocity of a Body in an Undersea Environment.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Thompson,John R

Report Date : 18 Oct 1976

Pagination or Media Count : 13

Abstract : The patent application relates to a hollow, projectile-shaped body containing an acoustical transducer which is released into the sea such that the body descends in free fall until it strikes and penetrates the sea floor, coming to a rest therein. Acoustic signals emanating from the acoustic transducer are processed, using the doppler effect to generate a direct current analog signal which is the function of the velocity of the body from a time immediately preceding the body striking the sea floor surface until the body comes to rest in the sea floor, thereby obtaining an indication of the physical characteristics of the sea floor.

Descriptors :   *Penetrometers, *Oceanographic equipment, *Patent applications, Ocean bottom, Doppler systems, Acoustic signals, Transducers

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE