Accession Number : ADD014943

Title :   Expendable Virtual Vertical Sensing Array.

Descriptive Note : Patent Application 601 213, Filed 15 Oct 90,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Roderick, William I ; VonWinkle, William A

Report Date : 15 Oct 1990

Pagination or Media Count : 12

Abstract : A method and apparatus of determining the range and depth of a far-field underwater target is provided. A multi-sensor device is released int the water from a surface ship or other deploying platform and allowed to exhibit vertical free-fall in the water. Acoustic field, temperature and depth information are received from the multi-sensor device at depth points along the free-fail. The depth points form a virtual vertical aperture. The acoustic field, temperature and depth information at the depth points are inputs of a virtual vertical sensing array used to determine the range with depth of the target.

Descriptors :   ACOUSTIC FIELDS, DEPTH, FAR FIELD, FREE FALL WEAPONS, MULTISENSORS, OCEAN SURFACE, SHIPS, UNDERWATER TARGETS, VERTICAL ORIENTATION, WATER

Subject Categories : Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE