论文部分内容阅读
用理论地震记录作输入,动校正对一个反射脉冲拉伸的方式是,脉冲的谱是未校正脉冲谱的线性压缩的变型。压缩的程度取决于t_0,炮检距,速度以及速度随t_0的变化率。谱的振幅按照与谱的压缩相同的因数增大。结果,共深度点叠加的相加脉冲中的低频成分出乎意料的丰富,并且信噪比也低于参加叠加的道数的平方根。
Using theoretical seismograms as inputs, kinematic correction stretches a reflected pulse in such a way that the spectrum of the pulse is a variant of the linear compression of the uncorrected pulse spectrum. The degree of compression depends on the rate of change of t_0, offset, speed and speed with t_0. The amplitude of the spectrum increases by the same factor as the compression of the spectrum. As a result, the low-frequency content in the additive co-depth point additive pulse is surprisingly plentiful and the signal-to-noise ratio is also lower than the square root of the number of channels participating in the superposition.