The application of split step fourier migration to interpreting GPR data in Vietnam

Dang Hoai Trung; Nguyen Van Giang; Nguyen Thanh Van; Nguyen Van Thuan; Vo Minh Triet

doi:10.15625/1859-3097/17/4B/13004

Author affiliations

Authors

Dang Hoai Trung University of Science, Vietnam National University-Ho Chi Minh City
Nguyen Van Giang Institute of Geophysics, VAST
Nguyen Thanh Van University of Science, Vietnam National University-Ho Chi Minh City
Nguyen Van Thuan University of Science, Vietnam National University-Ho Chi Minh City
Vo Minh Triet University of Science, Vietnam National University-Ho Chi Minh City

DOI:

https://doi.org/10.15625/1859-3097/17/4B/13004

Keywords:

Split Step Fourier Migration, energy diagram, finite - difference migration.

Abstract

Migration methods play an essential role in processing ground penetrating radar data. For estimating electromagnetic propagation velocity distribution, the finite - difference migration is used because of its reliable performance with high noise conditions. To optimize this migration algorithm, we propose using energy diagram as a criterion of looking for the correct velocity. If the velocity varies laterally and vertically, split step Fourier migration is used for creating a true image of subsurface structures. We applied these steps to real data in Vietnam. The results verified on field data show that migrated images with calculated velocity from energy diagram have the best quality.

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References

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