Abstract ：A passive long wave cochlea model is applied to extract audial feature of naval vessel radiation noise.

摘 要 ：为提取声听觉特征，应用被动长波模型对声进行了分析，得到声信号的二时空分布。

As a qualitative analysis,finite element method gets a more satisfactory result in describing the propagation of the long wave of open channel unconstant flow.

作为一种定性分析，有限法对描述明渠非恒定流长波的传播给出了满意的结果。