Numerical Modeling using the Nonlinear Progressive Wave
Equation (NPE)
Nonlinear
Acoustic Propagation in an Ocean Waveguide
| Fig. 5.a and Fig. 5.b represent the evolution of the spectrum versus depth for the backpropagated signals observed previously. |
Fig. 5.a : Evolution of the spectrum versus depth during the back propagation with the linear model
Fig. 5.b : Evolution of the spectrum versus depth during the back propagation with the nonlinear model
| In the following, the NPE model is used to simulate the nonlinear acoustic propagation in the atmosphere by adapting the boundary conditions of the waveguide. |