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- W2385207907 abstract "Full waveform inversion of cross-hole radar is a kind of tomographic imaging technique.It uses full-waveform information to obtain the electric parameters of the underground media between the boreholes.Most conventional tomographic inversions use ray tracing method,the velocity profile(permittivity image)can be obtained by first-arrival wave,and attenuation profile(conductivity image)can be obtained from maximum amplitude.There are many shortcomings of conventional method.The main reason is that it just uses a small portion of the signal information.In this paper,we derive the algorithm of cross-hole radar full-wave inversion.The parallel algorithm based on distributed computers effectively solves the problem of massive data computation.First of all,we establish a 2D-TE mode finite-difference time-domain method(FDTD)with uniaxial perfectly matched layers(UPML)as forward modeling algorithm.What′s more,we derive the gradient and step formulas.And we propose the first permittivity inversion image as the initial model of simultaneous inversion.Finally we test several models and achieve good inversion results." @default.
- W2385207907 created "2016-06-24" @default.
- W2385207907 creator A5083222811 @default.
- W2385207907 date "2014-01-01" @default.
- W2385207907 modified "2023-09-25" @default.
- W2385207907 title "Study of cross-hole radar tomography using full-waveform inversion" @default.
- W2385207907 hasPublicationYear "2014" @default.
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