Multi-domain frequency-division parallel multi-scale full-waveform inversion method
A full-waveform inversion, multi-scale technology, applied in measurement devices, instruments, scientific instruments, etc., can solve the problem of wasting a lot of time, and achieve the effect of alleviating cycle skipping, reducing dependence, and avoiding time waste.
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[0122] Example 1
[0123] According to the exploration requirements, the Parallel Computing Toolbox and MATLAB Distributed Computing Server (R2013a) were installed under the Windows 7 flagship system to build the MATLAB parallel platform.
[0124] Using Marmousi for testing, because the original Marmousi model is large and considering the limited hardware equipment, the original model is thinned, and the thinned Marmousi model is used for full waveform inversion test. real model (with figure 2 ) and the time-domain empirical mode decomposition full-waveform inversion results ( image 3 ).
[0125] The model parameters are as follows:
[0126] Table 1 Multi-domain frequency division parallel multi-scale full waveform inversion test parameters
[0127] model size
[0128]The grid size of the model is 128×384, the grid distance is dz=dx=50m, the horizontal distance is 19.2km, and the vertical depth is 6.4km. The seismic wave velocity in the model ranges from 1.5km / ...
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