Underwater Acoustic Simulation Toolkit

The Underwater Acoustic Simulation Toolkit is a comprehensive software package that implements various acoustic propagation models through specialized computational programs. The toolkit includes implementations of the normal mode model for modal decomposition analysis, ray tracing algorithms for geometric acoustics simulation, fast field program (FFP) for efficient wavenumber integration, and parabolic equation (PE) methods for wide-angle wave propagation calculations. These programs are designed to simulate and analyze complex underwater acoustic phenomena through numerical computation methods, including sound propagation patterns, boundary reflection effects, and volume scattering behavior. The toolkit features a modular architecture with core functions implementing specific algorithms - such as wavenumber integration routines for FFP and split-step Fourier solutions for PE models. The software provides a user-friendly interface with parameter configuration modules that allow customized simulation setups and optimization of computational parameters. Key functions include range-dependent environment modeling, frequency-domain analysis tools, and output visualization modules for acoustic field displays. With its comprehensive modeling capabilities and robust codebase, this toolkit serves as a powerful computational resource for applications including underwater communication system design, sonar signal processing algorithm development, and marine environmental monitoring studies. The implementation supports both range-independent and range-dependent scenarios with configurable oceanographic parameters.