Accession Number : ADA621883
Title : Hypothetical Mine Hunting Sonar - Internal Wave Impact on Performance
Descriptive Note : Memorandum rept.
Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC ACOUSTICS DIV
Personal Author(s) : Simpson, Stewart M ; Orr, Marshall H ; Tucholski, Edward
Report Date : 09 Dec 2014
Pagination or Media Count : 25
Abstract : Acoustic signals exhibit continuous spatial and temporal variability when propagating through a sound speed field that is perturbed by oceanic internal waves. Acoustic systems operating in an internal wave perturbed sound speed field will exhibit performance variability. Numerical simulations are presented which quantify the impact of oceanic internal waves on the performance of a hypothetical mine hunting sonar system operating near a continental shelf break. The simulations show that signal excess probability distributions vary with target depth and range and the variability in the performance of the sonar system will be dependent on the figure of merit parameters selected for the system's operation.
Descriptors : *MINE HUNTING , *PERFORMANCE(ENGINEERING) , *SONAR , ACOUSTIC FIELDS , ACOUSTIC SCATTERING , ACOUSTIC SIGNALS , BACKSCATTERING , CONTINENTAL SHELVES , DEPTH , INTERNAL WAVES , OCEAN BOTTOM , PERTURBATIONS , PROBABILITY DISTRIBUTION FUNCTIONS , RANGE(DISTANCE) , SIMULATION , TARGETS , TRANSMISSION LOSS , WAVE PROPAGATION
Subject Categories : Acoustic Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE