A method and device for radial compensation of das acquisition vsp variable offset wave field
A compensation method and a technology of variable offset distance, which are applied in the direction of measuring devices, seismology, instruments, etc., can solve the problems of inability to achieve effective radial compensation and correction of the wave field of optical fiber acquisition data, and achieve the effect of improving the effect of amplitude preservation
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[0031] The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.
[0032] The present invention takes into account the conventional three-component detector, which can only respond to the scalar wave field along the direction of the optical fiber. When the offset changes, due to the lack of other component information of the space coordinate system, the conventional vector rotation synthesis processing method cannot be used for the actual diameter. In addition, as the offset increases, the attenuation law of the direct wave field collected by DAS-VSP is also different from the Z component collected by the conventional three-component detector. The direct wave field collected by the conventional three-component detector The Z component record is proportional to the cosine of the incident angle, and the direct wave field reco...
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