Accession Number : ADA330019

Title :   Bottom Backscattering Measured Southwest of Key West During Littoral Warfare Advanced Development Focused Technology Experiment 97-2

Descriptive Note : Interim rept.

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC ACOUSTICS SYSTEMS BRANCH

Personal Author(s) : Soukup, Raymond J. ; Edsall, Douglas W.

PDF Url : ADA330019

Report Date : 30 SEP 1997

Pagination or Media Count : 15

Abstract : Measurements of ocean bottom backscattering were performed in a shallow water environment southwest of Key West, Florida. as part of the Littoral Warfare Advanced Development (LWAD) Focused Technology Experiment 97-2 (FTE 97-2). Scattering strengths were obtained at 2, 2.5, 3 and 3.5 kHz as a function of grazing angle at a single site with a sandy bottom. The scattering strengths roughly followed a Lambert's Law (dependence on the square of the sine of the grazing angle) dependence with constants ranging from -22 dB for 2000 Hz to -19 dB for 3500 Hz. This frequency dependence was consistent with the results given by the Mourad-Jackson bottom scattering model.

Descriptors :   *BACKSCATTERING, *UNDERWATER ACOUSTICS, *SONAR SIGNALS, SHALLOW WATER, ACOUSTIC MEASUREMENT, REVERBERATION, OCEAN BOTTOM, FLORIDA, GRAZING ANGLES.

Subject Categories : Acoustic Detection and Detectors
      Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE