Accession Number : AD0646496

Title :   ACOUSTIC DISTANCE MEASURING EQUIPMENT FOR RADIATED NOISE MEASUREMENTS,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Diehl,W. C. ; Dale,N. H.

Report Date : AUG 1966

Pagination or Media Count : 53

Abstract : The Acoustic Distance Equipment (DME) system is an underwater acoustical range measuring system using a stationary echo ranger plus recorder and a transponder. The transponder is mounted on the submerged vessel to which the range is desired. The echo ranger plus recorder, termed DME recorder, initiates the sequence of operation by transmitting a pulsed signal to the transponder, which after reception and processing transmits its own signal back to the DME recorder. The recorder marks its own time of transmission and the time of reception from the transponder on a calibrated paper. In this manner one is able to determine the distance from the stationary DME recorder to the movable transponder on the vessel. The equipment is described in this instruction manual with specifications, electrical drawings, waveform pictures, and tabulation of various voltages supplied.

Descriptors :   (*UNDERWATER SOUND EQUIPMENT, *DISTANCE MEASURING EQUIPMENT), ELECTRONIC RECORDING SYSTEMS, ECHO RANGING, NOISE, TRANSPONDERS

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE