Phase-matched filter is applied to extract phase of fundamental surface wave, and then time-variable filter is used to correct amplitude spectrum in order to isolate fundamental mode signs.
使用相匹配滤波技术提取基阶面波振型的相位，然后再利用时变滤波进行振幅谱校正，以此分离出基阶振型面波信号。
The shear (s) -wave velocity of near-surface materials and its effect on seismic-wave propagation are of fundamental interest in many engineering, environmental, and groundwater studies.
横波速度由于更能直接反映岩石的物理性质，从而在许多工程、环境和地下水勘查中有重要作用。
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