Title :
Reverberation fluctuations from a smooth seafloor
Author :
Stanic, Steve ; Kennedy, Edgar G.
Author_Institution :
US Naval Res. Lab., Stennis Space Center, MS, USA
fDate :
4/1/1993 12:00:00 AM
Abstract :
High-frequency shallow-water reverberation statistics were measured from a smooth, sandy, featureless seafloor. The reverberation statistics are presented as a function of source frequency (20-180 kHz), grazing angle (30°, 20°, 9.5°), and source beamwidths (1.2°-2.75°). Generally, the reverberation statistics did not follow a Rayleigh fading model. The model dependence of the reverberation statistics exhibited a complex behavior that ranged from near Gaussian to beyond log-normal. The results show that small changes in the source frequency, grazing angles, and beamwidths caused large variations in the model dependence of the reverberation statistics
Keywords :
acoustic signal processing; fading; fluctuations; geology; reverberation; statistical analysis; underwater sound; 20 to 180 kHz; Rayleigh fading model; beamwidths; fluctuations; grazing angle; sandy seafloor; seafloor; shallow-water reverberation statistics; source beamwidths; source frequency; Acoustic scattering; Fluctuations; Frequency; Radar scattering; Rayleigh scattering; Reverberation; Sea floor; Sea measurements; Sea surface; Statistics;
Journal_Title :
Oceanic Engineering, IEEE Journal of
