1887

Abstract

Summary

Reverse time migration (RTM) in attenuating media needs to consider amplitude compensation and phase correction. However, such an artificial compensation is a nonstationary process with energy exponentially amplified over travel time, which indeed boosts high-frequency noise and generates undesirable artifacts. In this paper, a robust Q-compensated RTM (Q-RTM) scheme, regularized by time-variant filtering (TVF) in the k-space, is therefore proposed. Compared with conventional Q-RTM regularized by time-invariant filtering (TIF), our proposed method generates higher-resolution and higher-fidelity images. The synthetic examples further demonstrate the stability and feasibility of the proposed approach.

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/content/papers/10.3997/2214-4609.201700676
2017-06-12
2024-04-26
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