Accession Number : ADA322073

Title :   Bottom Scattering Strengths Measured Using Explosive Sources in the Critical Sea Test Program.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC ACOUSTICS SYSTEMS BRANCH

Personal Author(s) : Ogden, Peter M. ; Erskine, Fred T.

PDF Url : ADA322073

Report Date : 05 FEB 1997

Pagination or Media Count : 71

Abstract : Bottom backscattering strengths were measured in the Critical Sea Test (CST) program at many sites using explosive charges as sources and a horizontal line array as a receiver. This report is a catalog, with minimal analysis, of the values measured at each site. Scattering strengths were obtained for frequencies from 70 to 1300 Hz and at grazing angles from 23 to 30 deg (intermediate angles). For each site where a data set was collected, two plots are given showing representative bottom scattering strengths: a plot showing broadside scattering strengths, and another showing scattering strengths at 40 deg either forward or aft of broadside. The data for each test are summarized in plots showing the frequency dependence of the results at a 30 deg grazing angle.

Descriptors :   *IMPULSE NOISE, *ACOUSTIC SCATTERING, DATA BASES, BACKSCATTERING, LINEAR ARRAYS, UNDERWATER EXPLOSIONS, REVERBERATION, UNDERWATER ACOUSTICS, OCEAN BOTTOM, SEA TESTING, GRAZING ANGLES.

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE