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我们介绍了一种压制可控震源数据中谐波畸变的新方法。该技术以瞬时频率随时间呈线性变化的扫描定义为基础。该方法只需要计算一个确定性的具有k阶谐波畸变的相移滤波器,采用在这个特定的相移滤波器,能消除底板信号的所有谐波畸变和其他由可控震源道上强初至波产生的所有的谐波畸变。处理步骤如下:(1)将确定性纯相移滤波器用于可控震源数
We describe a new method of suppressing harmonic distortion in vibroseis data. The technique is based on a scan definition that the instantaneous frequency varies linearly with time. The method only needs to calculate a deterministic phase-shift filter with k-order harmonic distortion and uses this particular phase-shift filter to eliminate all the harmonic distortion of the floor signal and other signals from vibro- All the harmonic distortion generated by the wave. The procedure is as follows: (1) Use a deterministic pure phase shift filter for the number of vibrators