针对典型浅海海洋环境下的低频声传播问题，以快速场方法为建模手段，以声能流为研究对象，结合具体算例模拟研究了不同浅海环境参数对低频声信号传播特性的影响规律.研究结果表明：矢量场中质点垂直振速传播衰减远大于同点声压与水平振速传播损失；海洋环境参数、声源参数、海底声学参数均对低频声信号传播具有重要影响，其中又以海底声速对声能量传播特性的影响最为显著.
Targeted at the issue of low-frequency acoustic propagation in typical shallow water environment, and based on specific example simulation, the research of the influence law of different ocean environment parameters on the acoustic signal propagation at low frequency is performed through taking fast field method (FFM) as the modeling approach and acoustic energy flow as the research subject. The results have been proved that the transmission loss of vertical particle velocity is larger than that of pressure and horizontal particle velocity. Ocean environment parameters, sound source parameters and geo acoustic parameters all have important effects on acoustic signal propagation at low frequency, and the sound velocity in ocean bottom exerts the most significant influence.
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