Publications [#68152] of Qing H. Liu

Papers Published

1. Liu, Q.H. and Fan, G.-X., A PSTD algorithm for general dispersive media and its applications to GPR simulations, IGARSS '98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings. (Cat. No.98CH36174), vol. vol.1 (1998), pp. 207 - 9, Seattle, WA, USA [IGARSS.1998.702854]
   (last updated on 2007/04/17)

   Abstract:
   The authors develop a pseudospectral time-domain (PSTD) algorithm for the simulations of transient electromagnetic waves in highly dispersive media. A general formulation is proposed for arbitrary dispersion by expanding the dispersion relation into a summation of simple poles. By treating the spatial derivatives in the partial differential equations with fast Fourier transform (FFT), orders of magnitude reduction in the number of unknowns can be achieved. The wraparound effect in the FFT is eliminated by using the perfectly matched layer (PML) for dispersive media

   Keywords:
   geophysical prospecting;geophysical techniques;radar applications;radar cross-sections;radar theory;remote sensing by radar;terrestrial electricity;