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Volume 53, Issue 6
  • E-ISSN: 1365-2478

Abstract

ABSTRACT

We present a new least‐squares migration method called least‐squares wave‐path migration. The proposed method combines an iterative conjugate‐gradient solver with a stationary‐phase wave‐path migration operator. Numerical tests demonstrate that (i) least‐squares wave‐path migration is computationally more efficient than and almost as accurate as Kirchhoff least‐squares migration, and (ii) many of the artefacts seen in wave‐path migration images are suppressed after several conjugate‐gradient iterations. Previous results have shown that 3D wave‐path migration is up to 100 times faster than a standard 3D Kirchhoff migration, but sometimes at the cost of reduced quality. With the proposed least‐squares wave‐path migration method, the image quality in wave‐path migration can be improved at an acceptable increase in computational cost.

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/content/journals/10.1111/j.1365-2478.2005.00505.x
2005-11-02
2024-04-26

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References

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Least‐squares wave‐path migration
Geophysical Prospecting 53, 811 (2005); https://doi.org/10.1111/j.1365-2478.2005.00505.x
/content/journals/10.1111/j.1365-2478.2005.00505.x
/content/journals/10.1111/j.1365-2478.2005.00505.x
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  • Article Type: Research Article

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