Accession Number : ADD003175
Title : Underwater Intrusion Detecting System.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Thompson,John H ; Sims,David S
Report Date : 25 Nov 1975
Pagination or Media Count : 5
Abstract : The patent relates to the underwater surveillance of harbor and channel areas and the like, and more particularly to an active catacoustic system for detecting and classifying a body intruding in a volume of water being protected.
Descriptors : *Swimmers, *Antiintrusion devices, *Patents, Acoustic detectors, Active sonar, Display systems, Echo ranging, Underwater tracking
Subject Categories : Marine Engineering
Acoustic Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE