Accession Number : AD0703277

Title :   PHASE STABLE SOUND TRANSMISSION IN THE DEEP OCEAN.

Descriptive Note : Technical rept.,

Corporate Author : ROSENSTIEL SCHOOL OF MARINE AND ATMOSPHERIC SCIENCES MIAMI FLA

Personal Author(s) : Kronengold,Morton ; Sykes,Alan O.

Report Date : FEB 1970

Pagination or Media Count : 22

Abstract : To observe the stability of the Complex Propagation loss in the deep ocean, a continuous six day experiment at 750 Hz was conducted during October 1968 from the Navy Underwater Sound Laboratory in Bermuda, using a bottomed source and a hydrophone array of Bermuda in 11,000 and 15,000 feet of water respectively. The transmission path varied from 28 to 41 nautical miles and the propagation mode was SRBR. Over the six day period the carrier frequency component of the received signal was stable in both amplitude and phase for periods of many minutes and its phase fluctuations correlated strongly with tidal fluctuations. (Author)

Descriptors :   (*UNDERWATER SOUND, SOUND TRANSMISSION), (*SOUND TRANSMISSION, ATLANTIC OCEAN), HYDROPHONES, PHASED ARRAYS, DEEP WATER, PHASE MEASUREMENT, STABILITY, UNDERWATER SOUND SIGNALS, BERMUDA

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE