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Compressed Sensing Based Sparse Pseudo-orthogonal Radon TransformNormal access

Authors: W.J. Xu, B. Feng, H.Z. Wang and J.F. Yin
Event name: 78th EAGE Conference and Exhibition 2016
Session: Seismic Signal Processing - Temporal and Spatial Resolution I
Publication date: 31 May 2016
DOI: 10.3997/2214-4609.201601250
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.93Mb )
Price: € 20

Summary:
Radon transform (RT) has been widely used in seismic data processing. The non-orthogonality of discrete Radon transform operator often leads to strong aliasing and low resolution of Radon spectrum. Much attentions are paid to inverting a sparser Radon spectrum while less work on its amplitude preserving of the inverse Radon transform (IRT). In fact, conventional IRT implies a constant-amplitude assumption. To address this problem, we propose a sparse pseudo-orthogonal Radon transform (SPO-RT) method. First we define a waveform-preserving IRT procedure by introducing a traveltime prediction error (TPE) and a spatial-variant amplitude (SVA) function to IRT. Then, we reformulate the inversion of SRT spectrum as a compressed sensing (CS) problem, and present a new matching pursuit (MP) algorithm to solve the sparse inversion problem. The proposed method may have potential prospects in many fields. In this paper, it is applied to the separation of seismic phases and inversion of ray-parameters. Synthetic data tests demonstrate the effectiveness of the proposed method.


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