Title :
Efficient Implementation of Plane Wave Excitation in the Laguerre-Based BOR-FDTD Method
Author :
Chen, Hai-Lin ; Chen, Bin ; Yi, Yun
Author_Institution :
Electromagn. Lab., Nanjing Eng. Inst., Nanjing
fDate :
3/1/2009 12:00:00 AM
Abstract :
In the Laguerre-based bodies of revolution finite-difference time-domain (BOR-FDTD) method, the plane wave excitation takes a major part of the total computation time. This time is mainly consumed in evaluating the expansion coefficient of incident field which involves integral of the weighted Laguerre polynomial with respect to time. In this work, an efficient one-dimensional auxiliary Laguerre-based FDTD algorithm combined with correlation operation is presented to speed up the plane wave excitation. Numerical results indicate that the proposed method is valid and highly efficient.
Keywords :
electromagnetic wave propagation; finite difference time-domain analysis; polynomials; stochastic processes; Laguerre-based BOR-FDTD method; bodies of revolution; correlation operation; finite-difference time-domain method; incident field expansion coefficient; plane wave excitation; weighted Laguerre polynomial; Acceleration; Electromagnetic scattering; Finite difference methods; Moment methods; Polynomials; Radar applications; Radar scattering; Stability; Testing; Time domain analysis; Bodies of revolution (BOR); Laguerre polynomials; finite-difference time-domain (FDTD); scattering;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2009.2013452