Surface Duct, Rough Surface Scattering, and Cusped Caustic Improvements for FACT

摘要

The TAEAS Program provides environmental acoustics support to a number of Fleet commands. This support includes the development and maintenance of the tactical prediction model, ASRAP. Recently SAI has developed a set of modifications to the FACT Model (the transmission-loss component of ASRAP) to improve the treatment of surface ducts, rough surface scattering and cusped caustics. These model updates were assembled in an internally consistent form and provided to NORDA 320 under this contract. Complete technical documentation, source code listings and test cases are presented in a companion report.