在垂直地震剖面中，偏移距是震源和井口之间的水平距离。在斜井的情况下，偏移距是震源和检波器在地表的投影之间的距离。
In a vertical seismic profile, offset is the horizontal distance between the source and the wellhead or the surface projection of the receiver in the case of a deviated well.
变方向折线剖面是在地形、地质情况较为复杂地区普遍采用的实测地质剖面方法。其地质剖面图目前一般用几何作图方法以投影法成图。
The construction of the direction changing section is a method of measuring a geological section applied commonly in areas with complex topographic and geological condition.
对未知目标，其距离剖面像在各特征子空间中的投影，经相应降噪算子作用后，以能量最大为准则进行识别。
The range profile of an unknown target is mapped into each subspace and transformed by the corresponding operator. The paper USES energy maximum of the transforming as...
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