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Matching Pursuit Full Waveform Inversion
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 77th EAGE Conference and Exhibition 2015, Jun 2015, Volume 2015, p.1 - 5
Abstract
Summary
One fundamental challenge of FWI is the local minimum issue caused by the cycle skipping between the predicted and acquired data. In order to overcome this challenge and achieve a successful inversion, a good initial model becomes a must-have ingredient of FWI. In another word, the background model has to be accurate enough to start FWI. Our proposed matching pursuit FWI (MPFWI) is designed to build the relation between travel time shift and model error in a different and novel way, so that FWI can be used to correct the erroneous background model, and therefore mitigate cycle skipping issues and improve the robustness of FWI with inaccurate initial models.
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