TY - JOUR
T1 - Hybrid ray-fdtd moving coordinate frame approach for long range tracking of collimated wavepackets
AU - Pemper, Y.
AU - Heyman, E.
AU - Kastner, R.
AU - Ziolkowski, R. W.
N1 - Funding Information:
Raphael Kastner received his B.S. (Summa cum laude) and M.S. degrees from the Technion, Israel Institute of Technology, in 1973 and 1976, respectively, and his Ph.D. degree from the University of Illinois in 1982. From 1976 to 1988 he was with RAFAEL, Israel Armament Development Authority, where from 1982 to 1986 he headed the antenna section. He was Visiting Assistant Professor at Syracuse Uni-versity from 1986 to 1987, and a Visiting Scholar at the University of Illinois in 1987 and 1989. Since 1988 he has been with the Department of Physical Electronics, Tel Aviv University, where he is an Associate Professor. Prof. Kastner is a member of Tau Beta Pi and Eta Kappa Nu. He is a senior member of the IEEE. He is serving as the secre-tary of URSI Israel, as the head of Commission B in Israel and as the comptroller for the IEEE Israel Section. He has recently received a teaching excellence award.
PY - 2001
Y1 - 2001
N2 - Modeling of long range propagation of collimated wavepackets poses some major difficulties with the conventional FDTD scheme. The difficulties arise from the vast computer resources needed to dis-cretize the entire region of interest and the accumulation of numerical dispersion error. As a means for circumventing these difficulties, the moving frame FDTD approach is in this work. In this approach, the computational grid size is limited to the order of the pulse length, and it and moves along with the pulse. The issues discussed in conjunction with this method are those of numerical dispersion, which is shown to be reduced substantially compared with the stationary formulation, numerical stability, and absorbing boundary conditions at the leading, trailing and side boundaries, Numerical results of pulsed beam propagation in both homogeneous and plane stratified media are shown, and the capability of the method is demonstrated with propagation distances exceeding the order of 104 pulse lengths.
AB - Modeling of long range propagation of collimated wavepackets poses some major difficulties with the conventional FDTD scheme. The difficulties arise from the vast computer resources needed to dis-cretize the entire region of interest and the accumulation of numerical dispersion error. As a means for circumventing these difficulties, the moving frame FDTD approach is in this work. In this approach, the computational grid size is limited to the order of the pulse length, and it and moves along with the pulse. The issues discussed in conjunction with this method are those of numerical dispersion, which is shown to be reduced substantially compared with the stationary formulation, numerical stability, and absorbing boundary conditions at the leading, trailing and side boundaries, Numerical results of pulsed beam propagation in both homogeneous and plane stratified media are shown, and the capability of the method is demonstrated with propagation distances exceeding the order of 104 pulse lengths.
UR - http://www.scopus.com/inward/record.url?scp=84887503592&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84887503592&partnerID=8YFLogxK
U2 - 10.2528/PIER00021505
DO - 10.2528/PIER00021505
M3 - Article
AN - SCOPUS:84887503592
SN - 1070-4698
VL - 30
SP - 1
EP - 32
JO - Progress in Electromagnetics Research
JF - Progress in Electromagnetics Research
ER -