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《Chinese Journal of Geophysics》 1994-01
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MULTIFREQUENCY BACKSCATTERING TOMOGRAPHY IN A VERTICALLY VARYING BACKGROUND

HUANG LIAN-JIE;WU RU-SHAN(Institute of Geophysics,Academia Sinica, Beijing 100101)  
Compared to a single-frequency diffraction tomography,the multifrequncy backscattering tomography(MFBT) in a vertically varying background improves greatly 1)Present address:Departement de Sismologie,Institut de Physique du Globe de Paris,4,Place Jussieu,F-75252 Paris Cedex 05, France the resolution and quality of images.The computation speed of the approach is much faster than other multifrequency methods such as multifrequency holograPhy,pre-stack migration,etc.It is more practical than the MFBT in a homogeneous background proposed by the literature and its computation speed by backpropagation is almost the same as that of the method in the literature.We have also presented a method of generating the Born scattered wave fields in spatial domain for a vertically varying background.
【CateGory Index】: P631.443
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