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| Keywords | |
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full waveform inversion |
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permittivity |
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conductivity |
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cross- hole radar |
| Authors | |
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MENG Xu |
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LIU Si-Xin |
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WU Jun-Jun |
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FU Lei |
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DENG Li |
| PubMed | |
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Article by Meng, X. |
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Article by Liu, S. X. |
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Article by Wu, J. J. |
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Article by Fu, L. |
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Article by Deng, L. |
Full waveform inversion of time- domain cross- hole radar and its field application
MENG Xu, LIU Si-Xin, WU Jun-Jun, FU Lei, DENG Li
1. College of Geo- exploration Science and Technology��Jilin University��Changchun 130026��China; 2. BGP Inc�� ��China National Petroleum Corporation��Zhuozhou 072751��Hebei��China
Gradient formula is obtained by taking the derivative of the object function with respect to the mod- el parameter�� And permittivity and conductivity are simultaneously updated by using the conjugate gradient method�� Then we apply FWI to a group of synthetic and field data�� and the results of synthetic data show that FWI can accu- rately reconstruct the value and shape of the layers and sub- wavelength anomalous bodies�� ��esults of filed data turn out that small subsurface features can be imaged and the resolution is high in the full waveform tomograms��