Accelerated plane-wave destruction

Published as Geophysics, 78, no. 1, V1-V9, (2013)

Accelerated plane-wave destruction

Zhonghuan Chen, Sergey Fomel, and Wenkai Lu

Department of Automation,
State Key Laboratory of Intelligent Technology and Systems
Tsinghua National Laboratory for Information Science and Technology
Tsinghua University
Beijing, China. 100084
Email: zhonghuanchen@gmail.com.
Bureau of Economic Geology,
Jackson School of Geosciences
The University of Texas at Austin
University Station, Box X
Austin, TX 78713-8924
Email: sergey.fomel@beg.utexas.edu.

Abstract:

When plane-wave destruction (PWD) is implemented by implicit finite differences, the local slope is estimated by an iterative algorithm. We propose an analytical estimator of the local slope that is based on convergence analysis of the iterative algorithm. Using the analytical estimator, we design a noniterative method to estimate slopes by a three-point PWD filter. Compared with the iterative estimation, the proposed method needs only one regularization step, which reduces computation time significantly. With directional decoupling of the plane-wave filter, the proposed algorithm is also applicable to 3D slope estimation. We present both synthetic and field experiments to demonstrate that the proposed algorithm can yield a correct estimation result with shorter computational time.

Accelerated plane-wave destruction