Abstract
The development of a computer model based on numerical ordinary differential equation methods (ODE) for solving underwater parabolic wave equations is near completion. During the development period, the model has been tested by comparing its solutions with those of existing models. Limited comparisons with the fast field program (FFP) and a parabolic equation (PE) model based on the split‐step Fourier algorithm have been made. Solutions to two classes of test problems were compared. The first class of problems satisfied all requirements of the split‐step method. The second class dealt with strong bottom interactions. The ODE PE model produced accurate results for both classes of problems with favorable speed. [Work supported by NAVMAT and NAVSEA.]
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