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:

2014-12-09

Pagination or Media Count:

25.0

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 systems 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
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE