The newmethod needs no first break times of refraction waves,but derives adjacent receiving-point relative time shifts from crosscorrelation of adjacent-trace refraction wavegroups.

 
  • 該法不需要拾取折射波初至時(shí)間,而是利用折射波組相鄰道互相關(guān)求取各檢波點(diǎn)的相對時(shí)差,再以中值濾波方法選取中值,作為兩檢波點(diǎn)的時(shí)差。
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