Journal of Jilin University(Earth Science Edition) ›› 2018, Vol. 48 ›› Issue (2): 474-482.doi: 10.13278/j.cnki.jjuese.20170281

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Envelope Waveform Inversion of Cross-Hole Radar Without Low Frequency Data

Liu Xintong1, Liu Sixin1, Meng Xu2, Fu Lei1   

  1. 1. College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China;
    2. Space and Science Institute, Macau University of Science and Technology, Macau 999078, China
  • Received:2017-10-16 Online:2018-03-26 Published:2018-03-26
  • Supported by:
    Supported by National Key Research and Development Program of China (2016YFC0600505) and National Natural Science Foundation of China (41574109, 41504085)

Abstract: The full waveform inversion (FWI) has been used as a high resolution imaging method for cross-hole radar inversion; however, it is still trapped by local minimum. An effective way is to provide an accurate initial model for FWI. The fact is that the underground media is unknown, and the low-frequency information are usually not available in the GPR field data, which lead to difficult to achieve accurate result in FWI. The gradient formula of envelope waveform inversion (EWI) is deduced in detail by using the method of derivation of the envelope objective function. In comparison with the inversion result of the traditional FWI, the EWI has a better inversion ability for low-frequency missing data, and can effectively restore the missing low-frequency information. It can provide quantitative interpretation for subsurface media.

Key words: full waveform inversion, cross-hole radar, envelope, low frequency component, initial model

CLC Number: 

  • P631.3
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