A three-dimensional coupled-mode model for the acoustic field in a two-dimensional waveguide with perfectly reflecting boundaries

Luo Wen-Yu^{1, †,}, Yu Xiao-Lin^{1, 2}, Yang Xue-Feng^{2, 3}, Zhang Ze-Zhong^{1, 2}, Zhang Ren-He¹

TL along the range computed by the analytical image solution (blue solid curves), the analytical total solution (red dashed curves), and DGMCM3D (green dashed curves) for the 2.86° wedge problem with a rigid bottom. (a) At depth 30 m, y = 0 km; (b) at depth 150 m, y = 0 km; (c) at depth 30 m, y = 10 km; (d) at depth 150 m, y = 10 km.