Accession Number : AD0674371
Title : AN ADAPTIVE-CORRELATION SYSTEM FOR PROCESSING SONAR MULTIPATH ARRIVALS.
Descriptive Note : Research and development rept. Nov 65-Nov 67,
Corporate Author : NAVAL UNDERSEA WARFARE CENTER SAN DIEGO CALIF
Personal Author(s) : Pos,N. D.
Report Date : NOV 1967
Pagination or Media Count : 34
Abstract : A system developed at NUWC improves gain in the processing of multipath arrivals in studies of underwater-sound correlation using pseudorandom-noise codes. The system correlates the arriving signal against an accumulated picture of the recent history of the medium, rather than against the perfect replica of the expected signal commonly used in the past. Typical results obtained from laboratory-simulated multipaths are exhibited and described. (Author)
Descriptors : (*SONAR SIGNALS, PROCESSING), SOUND TRANSMISSION, UNDERWATER SOUND, ADAPTIVE SYSTEMS, CORRELATORS, CORRELATION TECHNIQUES, MULTIPATH TRANSMISSION, DIAGRAMS, GAIN, NOISE, SIMULATION
Subject Categories : Acoustic Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE