Time-Domain Fast Field Program for Underwater Acoustic Propagation Calculation

The Time-Domain Fast Field Program for underwater acoustic propagation calculation serves as a highly effective tool for investigating acoustic wave propagation under different pulse conditions. This program employs advanced numerical algorithms, potentially including finite-difference time-domain (FDTD) methods or spectral approaches, to simulate wave propagation through heterogeneous media. Key implementation aspects involve pulse source modeling (e.g., Gaussian or Ricker wavelet initialization), material property parameterization, and boundary condition handling (such as perfectly matched layers for absorption). Through this computational framework, researchers can gain deeper insights into wave propagation mechanics across various media and develop strategies for acoustic wave control. The program's architecture supports simulations in diverse environments, particularly oceanic propagation scenarios with depth-dependent sound velocity profiles. Development requires meticulous attention to computational efficiency through algorithmic optimization (e.g., parallel processing implementation) and numerical accuracy via dispersion error minimization. Consequently, researchers must conduct rigorous testing and performance tuning, including validation against analytical solutions and experimental data, to ensure reliable simulation of wave propagation dynamics.