Floating datum method is divide the static of relative fixed datum into two parts that are applied to seismic data before and after NMO respectively and the division is done on CMP gather.

• 浮动基准面方法是将相对固定基准面的一份静校正量分解成两部分,并分别在动校正前、后应用的一种处理手段,这种分解是以CMP道集为单位的。