多层介质中瑞雷波传播的数学模型

地面军事目标如坦克、装甲车辆行进时会产生地震波：在地层中传播的体波和在地表面传播的瑞雷波。当探测点距目标较远时，传感器检测到的目的运动产生的地震信号成份主要为瑞雷波。利用地震波对地面军事目标探测，主要是对瑞雷波探测和识别。该文根据地质模型假设，推导出多层介质条件下由点震源的作用在介质中引起的瑞雷波的传播模型，并用此模型对不同目标运动时所产生的瑞雷波信号加以预测。

A Mathematical Model of the Propagation of Rayleigh Wave in Multi-layer-medium

When military targets such as tanks, armored cars move on the ground, seismic waves can be generated: body wave propagating through the deeper parts of the Earth and Rayleigh wave propagating along the surface. The seismic waves signal detected by sensors is principally Rayleigh wave when the detection position is far from the target. Accordingly moving military target can be found by Rayleigh wave.In this paper, on the basis of geologic model, the propagation model of Rayleigh wave is deduced, which is caused by vibration point source and propagates in multi layer of media.Rayleigh wave signals of the different moving targets are predicted by the above mentioned model.