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结合射线和波数谱积分方法,对空气声入水传播途径进行了分析,利用海上试验数据进行了比较检验。结果表明,在浅海环境中,对水下声场有主要贡献的空气声入水传播途径,主要是透射穿过海面边界的折射直达声以及后续的海底反射声途径,其中折射直达声途径的贡献主要集中在声源正下方附近区域,当距离较远时,由于声线扩展损失效应以及直达声影区两方面的限制,折射直达声传播损失显著增加,对接收声场起主要贡献的是可以到达更远水平距离上的海底反射声,包括海底海面多次反射声。
Based on the integrated method of radiation and wave number spectrum, the airborne sound transmission of water was analyzed and compared with the sea test data. The results show that in the shallow sea environment, the main contribution to underwater sound field is the sound transmission of air, mainly through the refracted direct sound transmitted through the sea boundary and the subsequent submarine reflex sound path, of which the contributions of the refracted direct sound path are mainly concentrated In the immediate vicinity of the sound source, when the distance is long, the propagation loss of the refracted direct sound increases significantly due to the sound ray expansion loss effect and the direct sound shadow area, and the main contribution to the receiving sound field can reach further Seabed reflected sound at horizontal distance, including multiple reflections at sea floor.