MATLAB Toolbox for Underwater Acoustic Wave Propagation Calculation: AcTUP-v2.2L

AcTUP-v2.2L is a specialized MATLAB toolbox designed for calculating acoustic wave propagation in water, applicable to underwater acoustic simulations, ocean acoustics research, and engineering applications. This toolkit integrates multiple classical acoustic modeling methods to help users efficiently simulate acoustic wave propagation characteristics in aquatic media.

The toolbox's core functionality includes three mainstream computational models:

Ray Model: Based on geometric acoustics theory, suitable for high-frequency acoustic wave propagation simulation. By tracking acoustic ray trajectories, it can analyze multipath effects and sound field distribution with high computational efficiency. The implementation uses numerical integration methods to calculate ray paths through varying sound speed profiles.

Normal Mode Model: Based on wave equation decomposition, appropriate for low-to-medium frequency sound field simulation. By solving normal mode eigenvalues and eigenfunctions, it accurately describes interference and attenuation characteristics of acoustic waves in waveguide environments (such as ocean sound channels). The code employs numerical solvers for the depth-separated wave equation with boundary conditions.

Fast Field Model: Uses numerical methods to directly solve the wave equation, suitable for full-wave simulation of broadband sound fields in complex environments. While computationally intensive, it provides the highest accuracy. The implementation typically involves Fourier/Lebedev transformations and numerical integration techniques.

The toolbox's advantage lies in engineering theoretical models - users can quickly construct underwater acoustic scenarios through preset parameters such as source frequency, water depth, and seabed sediment properties. It supports result visualization including propagation loss curves and sound field剖面图 (cross-sectional diagrams). Its modular design facilitates researchers' extension of custom algorithms through MATLAB's object-oriented programming capabilities.

Typical application scenarios include underwater communication system design, sonar performance evaluation, and ocean environmental noise analysis. For interdisciplinary researchers, AcTUP-v2.2L lowers the barrier to acoustic modeling by avoiding the繁琐 (tedious) process of implementing numerical algorithms from scratch. The toolbox provides API functions for parameter configuration, model execution, and data analysis, following MATLAB's standard programming conventions.