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A three-dimensional finite-difference time-domain (FDTD) approach for electromagnetic scattering from a randomly rough surface is developed. In order to save computing time, a graphics processing unit (GPU) based parallel computing framework is proposed to accelerate FDTD method. The parallel FDTD method assigns a thread for each Yee cell in the computing region for update calculation, and thus can achieve higher computational efficiency than the serial CPU algorithm. The parallel program is executed by a NVIDIA's Quadro P5000 card. The FDTD model for calculation of EM wave scattering from rough surface is developed. VV polarization and HV polarization bistatic scattering coefficients are calculated.
Zhang et al. (Thu,) studied this question.
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