Block sparse compressed sensing-based desert seismic exploration random noise suppression method
A random noise and compressed sensing technology, applied in seismology, seismic signal processing, geophysical measurement, etc., can solve problems such as non-directionality, achieve the effect of improving reconstruction accuracy, improving algorithm efficiency, and enhancing sparsity
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[0048] Include the following steps:
[0049] (1) Acquisition of desert earthquake records:
[0050] In the desert area of the Tarim Basin, the surface is mostly covered by desert, and the sand dunes on the surface are thick and undulating, and the absorption and attenuation of seismic waves are very serious. To conduct seismic exploration in the desert area of the Tarim Basin, the surface structure survey is first carried out, and the water table is accurately obtained through the water table measurement. Based on the results of micro-logging and small refraction, the well depth is reasonably and accurately designed, and the dune curve database is established through the dune curve survey to solve the problem of deep well excitation design for large sand dunes. Then, combined with the actual conditions in the field, seismic excitation is carried out. , and finally, according to factors such as the thickness of the sand dunes, adjust the survey line deployment and geophone ...
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