Prestack reverse‐time depth migration of arbitrarily wide‐angle wave equations

Abstract

Based on arbitrarily wide-angle wave equations, a reverse-time propagation scheme is developed by substituting the partial derivatives of depth and time with central differences. The partial derivative of horizontal direction is replaced with high order difference. The imaging condition is computed by solving the eikonal equations. On the basis of above techniques, a prestack reverse-time depth migration algorithm is developed. The processing examples of synthetic data show that the method can remove unwanted internal reflections and decrease the migration noise. The method also has the advantage of fidelity and is applicable of dip angle reflector imaging.

The Application of TRIZ Theory in the Rub Drum of Reverse Data Acquistion and Modeling

“…based on reverse engineering of product design is according to the existing model, point cloud model through data acquisition products, to reconstruct the CAD model based on point cloud model, in order to re design, the application of rapid manufacturing. Reverse engineering is an effective means for the digestion and absorption of existing products in the design, manufacturing and management knowledge, innovative design in the existing product basis, can effectively shorten the development cycle of new products, improve the success rate of new product development, so that enterprises in the fierce market competition to occupy a favorable position [1].…”