From modelling to inversion: designing a well-adapted simulator

ABSTRACT This paper describes a few mild design constraints that permit rapid adaptation of the modelling code for linear wave propagation to imaging/inversion or design optimization applications, retaining parallelism and other performance enhancements of the underlying simulator. It also describes...

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Bibliographic Details
Published in:Geophysical Prospecting 2011-09, Vol.59 (5), p.814-833
Main Authors: Symes, William W., Sun, Dong, Enriquez, Marco
Format: Article
Language:English
Subjects:
Adjoint
Born modelling
Computer programs
Computer simulation
Initialization
Inversions
Mathematical models
Modelling
Optimization
Software
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Summary:ABSTRACT This paper describes a few mild design constraints that permit rapid adaptation of the modelling code for linear wave propagation to imaging/inversion or design optimization applications, retaining parallelism and other performance enhancements of the underlying simulator. It also describes an software framework preserving the modularity of both optimization and modelling software in building inversion applications and illustrates this possibility via an example framework implemented in C++. Wave inverse problems tend to be afflicted by a variety of features, including extreme ill‐conditioning and nonlinearity, which degrade the performance of optimization formulations. Extended modelling variants of least‐squares inversion, motivated by migration velocity analysis, may relieve some of these difficulties. The framework described also accommodates these extensions to standard inversion.
ISSN:0016-8025
1365-2478
DOI:10.1111/j.1365-2478.2011.00977.x