Accession Number : AD0677279

Title :   UNDERWATER SOUND MEASUREMENTS FROM AN AIRCRAFT,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Urick,Robert J. ; Kelly,Clyde E.

Report Date : 17 JUN 1968

Pagination or Media Count : 18

Abstract : Sonobuoys can be used for underwater sound measurements from an aircraft in flight. In testing the feasibility of this idea, two series of field experiments were performed to yield data on bottom reflectivity and volume reverberation over wide areas of the Atlantic. Standard sonobuoys were modified by adding calibration circuitry to permit absolute measurements. The method yields great rapidity and mobility in data collection relative to shipboard measurements. (Author)

Descriptors :   (*NAVAL AIRCRAFT, STABILIZED PLATFORMS), (*SONOBUOYS, *SOUND RANGING), SOUND TRANSMISSION, FEASIBILITY STUDIES, UNDERWATER EXPLOSIONS, ECHO RANGING, HYDROPHONES, ACOUSTIC RANGES, AIR DROP OPERATIONS, COST EFFECTIVENESS, BERMUDA, ATLANTIC OCEAN

Subject Categories : Aircraft
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE