A Characterization Method of Amplitude Transversal Variation Based on Principal Component Analysis
A principal component analysis, lateral technology, used in measurement devices, geophysical measurements, seismology, etc., can solve problems such as noise resistance deterioration
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[0059] Such as figure 1 As shown, it is a flowchart of a method for describing amplitude lateral variation based on principal component analysis in the present invention, including the following steps:
[0060] Step 1: Input 3D post-stack seismic data and corresponding 3D apparent dip data;
[0061] Step 2: Filtering and preprocessing the 3D post-stack seismic data can improve the signal-to-noise ratio;
[0062] Step 3: After filtering and preprocessing, the 3D post-stack seismic data is obtained by Hilbert transform to obtain complex seismic traces, and the instantaneous amplitude is calculated;
[0063] Step 4: Calculate the partial derivative of the instantaneous amplitude along the 3D apparent dip angle data for the 3D post-stack seismic data after filtering and preprocessing;
[0064] Step 5: Use the instantaneous amplitude partial derivative to construct the covariance matrix and perform eigendecomposition to obtain the main eigenvalue and main eigenvector;
[0065] S...
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