Accession Number : ADD015079

Title :   Expendable Virtual Vertical Sensing Array.

Descriptive Note : Patent, Filed 15 Oct 90, patented 13 Aug 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

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

Report Date : 13 Aug 1991

Pagination or Media Count : 5

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 into 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-fall. The depth points from 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, TARGETS, UNDERWATER TARGETS, VERTICAL ORIENTATION, WATER

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE