Title :
Application of ADI-FDTD Algorithm in RCS Calculation of Three-Dimensional Targets
Author :
Huang, Liuhong ; Ding, Shijing ; Liu, Xiaoping
Author_Institution :
Third Eng. Res. Inst., Headquarters of the Gen. Staff Luoyang, Luoyang, China
Abstract :
The radar cross section (RCS) of three dimensional targets in free space is calculated using an alternating direction implicit FDTD (ADI-FDTD) algorithm. The key techniques of iterative equations and the near-to-far-field transformation of this algorithm are analyzed. Numerical examples of some typical targets are given. It is shown that the maximum time-step size of ADI-FDTD is not limited by the Courant-Friedrich-Levy (CFL) condition, this means less computational time and better efficiency. The results of ADI-FDTD can ensure the same accuracy as conventional FDTD as long as selecting appropriate time-step size.
Keywords :
finite difference time-domain analysis; iterative methods; radar cross-sections; radar tracking; target tracking; ADI-FDTD algorithm; Courant Friedrich Levy condition; RCS calculation; alternating direction implicit FDTD; finite difference time domain method; iterative equation; near to far field transformation; radar cross section; three dimensional target; time step size; Computational efficiency; Electromagnetic scattering; Equations; Finite difference methods; Mathematical model; Moment methods; Time domain analysis; alternative implicit finite-difference time-domain (ADI-FDTD); corner reflector; radar cross section;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6880-5
DOI :
10.1109/iCECE.2010.820
