In 1992, the Naval Research Laboratory (NRL) published a report describing the Range-dependent Active System Performance (RASP) prediction model; a sequence of computer programs using multipath propagation and scattering processes to predict the long-range, low-frequency boundary reverberation, and target returns that would be received in real ocean environments. That computer model has been extended to admit arbitrary source/ receiver configurations within a three-dimensional, range-dependent environment. The enhancements include: (1) range ...
This report presents the results from a series of airborne, SUS-based acoustic surface backscattering strength tests conducted over the western Atlantic Ocean during April 1988. We describe the airborne technique used to gather the acoustic data and the environmental data (sound speed profiles and wind speed). Analysis provides information on sea surface acoustic backscattering strengths for mean grazing angles from 7 deg to 30 deg, wind speeds from 7 to ...
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