基于射线声学的虚源法，通过具体算例，分析了典型声源声聚焦引起的测量误差。
Here the measurement errors due to acoustic focusing of typical sound sources are analyzed by detailed examples based on the method of image sources in the Ray Theory.
基于波数积分声场模型和虚源方法，开发了可计算海底掩埋物体三维散射声场的模型软件。
Combining the wavenumber integral model and virtual source method, a software for 3d scattering field from the buried target was developed.
通过实验拟合提出了等效虚源法，该新方法可简便准确地预测体声源和面声源在不同距离的影响声级；
The new method can simply forcast noise level affected by volume source or area source at different distances.
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