水下声道中的平滑平均声场

SMOOTH-AVERAGED SOUND FIELD IN UNDERWATER SOUND CHANNEL

摘要: 本文利用广义相积分近似克服了经典的WKB近似在反转点发散的困难,获得了水下声道中平滑平均声场的一般表式。对双直线型声道作了详细的讨论,改进了ƂpexoBCKHX^[1,2]的结果。

Abstract: In this paper, by use of a generalized phase-integral approximation, the difficulty of the classical WKB approximation which diverges on the turning-point is overcome, and then the general expressions of the smooth-averaged sound field in underwater sound channel are obtained. For the bilinear sound channel the discussion is done in detail, and the Brekhovskikh’s^[1,2] result is improved.