A linear sampling method for inverse scattering stodynamics elastodynamics problems in the time domain elastodynamics problems in the time domain

نویسندگان

  • S. H. Dehghan Manshadi
  • N. Khaji
چکیده

This paper, deals with detecting and identifying unknown scatters (e.g., obstacles) in an elastic background solid through the use of elastic illuminating waves. In this regards, the Linear Sampling Method (LSM) for the reconstruction of the underground obstacles from near-field surface seismic measurements in the time domain is explained. The LSM is an effective approach to image the geometrical features of unknown targets. Although this method has been used in inverse acoustics problems dealing with far-field wave patterns in full space domains, there is no specific attempt to apply this method to the interpretation of near-field elastic wave forms in the time domain. It is found that the linear sampling method in the time domain working with a frequency band, improves the quality of the reconstruction of the obstacles compared to the frequency domain methods.

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تاریخ انتشار 2012