Reverberation modeling with BiRASP—The bistatic range-dependent active system prediction model

Abstract

The calculation of bistatic reverberation is a computationally intensive exercise. Efficient computation of timely results typically involves numerous physical and algorithmic assumptions or approximations. Consequently, it is not unusual for predicted time series from different models to differ in level or structure. At a recent Reverberation Modeling Workshop [9–13 November 2006, Austin, TX], a set of test cases were proposed with the intent of establishing benchmark reverberation problems and solutions. This talk will focus on the test case performance of BiRASP, the Naval Research Laboratory’s bistatic reverberation model. BiRASP is a ray-based code, originally developed for deep-water, long-range, low-frequency reverberation predictions and data analysis. Results for the various test case problems will be shown. The consequences of some of the typical algorithm and physical assumptions/approximations will be demonstrated and discussed. [Work supported by the Office of Naval Research.]