Accession Number : AD0643531

Title :   A METHOD FOR DETERMINING THE LOCATION OF DEEP-OCEAN ACOUSTIC SOURCES,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Gennari,J. J. ; Heemstra,F. W.

Report Date : 01 MAY 1966

Pagination or Media Count : 22

Abstract : A concept and method were developed by which a vehicle can determine the location and acoustic source level of deeply submerged acoustic projectors. This concept was tested by using an acoustic source whose location and output level were known. A distribution of such known sources would provide a navigation system. The method for locating the position of an unknown source is essentially the solution of triangulation equations by use of the time difference in the arrivals of the direct and surface reflected acoustic pulses. Usually three measurement stations are to be chosen in a triangular pattern with distances between the stations of at least 5 miles. An application of this method is feasible in concept as a passive ranging system in certain types of ASW situations. (Author)

Descriptors :   (*UNDERWATER NAVIGATION, POSITION FINDING), (*POSITION FINDING, ACOUSTIC SIGNALS), DEEP SUBMERGENCE, SUBMARINES, UNDERWATER SOUND EQUIPMENT, NAVIGATIONAL AIDS, SOURCES, ACOUSTICS, DEPTH FINDING

Subject Categories : Direction Finding
      Underwater and Marine Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE