Principles of real and virtual imaging: application to interpretation of refraction data

Samir K. Dey-Sarkar

doi:10.1117/12.187483

23 September 1994 Principles of real and virtual imaging: application to interpretation of refraction data

Samir K. Dey-Sarkar

Proceedings Volume 2301, Mathematical Methods in Geophysical Imaging II; (1994) https://doi.org/10.1117/12.187483
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

Basic principle of 2D refraction analysis first illustrated by Hagedoom is reformulated in terms of migration theory. Reciprocity relationships are utilized to derive imaging principles which relate to the location of the refractor and velocity of the refractor. In this theory, two sets of images are simultaneously developed via migration of the refraction data. The first image called `the real image' locates the refractor in depth. The second image called `the virtual image' provides information regarding true subsurface velocity of the refractor. Methodology is independent of the geometry of the refractor or velocity variations along the refractor. Since the technique utilizes both kinematic and dynamic characteristics of the wave field, no travel time picking is required.

Citation Download Citation

Samir K. Dey-Sarkar "Principles of real and virtual imaging: application to interpretation of refraction data", Proc. SPIE 2301, Mathematical Methods in Geophysical Imaging II, (23 September 1994); https://doi.org/10.1117/12.187483

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