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A sample of controlled experiments in diff radion tomography 1
Author(s) -
Gelius L.J.
Publication year - 1995
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.1995.tb00123.x
Subject(s) - linearization , tomography , diffraction tomography , a priori and a posteriori , tomographic reconstruction , data acquisition , iterative reconstruction , diffraction , computer science , sampling (signal processing) , sample (material) , algorithm , detector , optics , physics , computer vision , nonlinear system , philosophy , epistemology , quantum mechanics , thermodynamics , operating system
Various applications of a new geophysical reconstruction method, generalized acoustical diffraction tomography (GADT), which is based on transmission data as input are considered. Conventional diffraction tomography methods normally require linearization with respect to a uniform reference medium and regular sampling along a straight line. Thus, these methods will not work well when the background is strongly non‐uniform and/or the acquisition geometry is arbitrary. However, GADT can, in principle, handle both irregularly spaced data, curved acquisition lines, and non‐uniform background models. A number of controlled model tank and field experiments, where the model and the test object(s) are known a priori, have been carried out. After acquiring the tomographic data in each experiment, these are used to compute a reconstruction of the model, which can then be compared with the actual, known model. The method's ability to yield high‐quality images of the different targets is demonstrated.