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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2011-05-27
A Hybrid Higher Order FDTD Scheme for Modeling Radar Cross Section of Electrically Large Targets
By
Xia Ai,

    Dr. Xia Ai

    School of Science

    Xidian University

    China

    Homepage

Yiping Han,

    Professor Yiping Han

    School of Science

    Xi'dian University

    China

    Homepage

Zhuyang Chen,

    Dr. Zhuyang Chen

    School of Science

    Xidian University

    China

    Homepage

Xiao-Wei Shi

    Professor Xiao-Wei Shi

    School of Electronics Engineering

    Xidian University

    China

    Homepage

Progress In Electromagnetics Research M, Vol. 18, 143-157, 2011
doi:10.2528/PIERM11042904 | Google Scholar

Abstract
This paper proposes a hybrid higher order finite difference time domain (FDTD) scheme that combines the classical FDTD scheme and the higher order FDTD scheme with second order accuracy in time and fourth order accuracy in space for analyzing the three-dimensional electrically large scattering problems. The classical FDTD stencils were used as buffers in the scattered field region to make the higher order FDTD stencils not intrude inside the absorbing boundary condition's regions. The superior performance of the hybrid higher order FDTD scheme has been compared with the classical FDTD one. Numerical results demonstrate that the proposed scheme would improve the accuracy and save the computer resources significantly compared to the classical FDTD scheme involved in the radar cross section (RCS) calculation. The obtained computational efficiency allows this proposed scheme to model the RCS of electrically large targets using the number of higher order FDTD cells which are much less than that of the classical FDTD cells required by three-dimensional FDTD scheme.
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Citation
Xia Ai, Yiping Han, Zhuyang Chen, and Xiao-Wei Shi, "A Hybrid Higher Order FDTD Scheme for Modeling Radar Cross Section of Electrically Large Targets," Progress In Electromagnetics Research M, Vol. 18, 143-157, 2011.
doi:10.2528/PIERM11042904
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