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An acoustic, high resolution, sediment profiler
(NATO. SACLANTCEN, 1966/11)
An acoustic sediment profiler is described that utilizes short 50 kHz pulses to achieve a high range resolution. In trials in shallow water, penetration depths of about 9 m and resolution of about 25 cm were obtained. ...
Numerical simulation of the effects of bathymetry on underwater sound propagation using three-dimensional parabolic models
(NATO. SACLANTCEN, 1998/03)
Two different three-dimensional parabolic equation (PE) methods are
Parameter estimation using multi-frequency range-dependent acoustic data in shallow water
(NATO. SACLANTCEN, 1996/11)
The estimation of all forward model parameters - geometric, geoacoustic,