Characteristic analysis and data comparative of linear and nonlinear low-frequency sweep in vibroseis
Jian Zhang,
Guoyong Zhao,
Leiliang Xu
et al.
Abstract:Low-frequency seismic data plays a crucial role in seismic data processing and seismic wave inversion. At present, there are two methods to realize the low-frequency excitation of vibrators: one is that the low-frequency vibrators are excited by linear sweep signals, and the other is that the conventional vibrators are excited by nonlinear low-frequency sweep signals. The cost of exploration using low-frequency vibroseis is high, and it is challenging to obtain sufficient low-frequency information using tradit… Show more
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