Library Subscription: Guest
Home Begell Digital Library eBooks Journals References & Proceedings Research Collections
Telecommunications and Radio Engineering

ISSN Print: 0040-2508
ISSN Online: 1943-6009

You have access to:
Volume 73, 2014 Volume 72, 2013 Volume 71, 2012 Volume 70, 2011 Volume 69, 2010 Volume 68, 2009 Volume 67, 2008 Volume 66, 2007 Volume 65, 2006 Volume 64, 2005 Volume 63, 2005 Volume 62, 2004 Volume 61, 2004 Volume 60, 2003 Volume 59, 2003 Volume 58, 2002 Volume 57, 2002 Volume 56, 2001 Volume 55, 2001 Volume 54, 2000 Volume 53, 1999 Volume 52, 1998 Volume 51, 1997

Telecommunications and Radio Engineering


pages 24-31

The FD-TD Method for the Analysis of Electromagnetic Wave Scattering from an Object Moving Parallel to the Incident Wave

Michiko Kuroda
Department of Information Networks, Tokyo University of Technology Scientific
Shigeaki Kuroda
Department of Mechanical Engineering and Intelligent Systems, The University of Electro-Communications

ABSTRACT

This paper presents a new numerical procedure for solving the electromagnetic field from a moving body. A novel numerical procedure of grid generation having a coordinate line coincident with an arbitrarily shaped moving boundary or moving body is described. It is the key feature of this method that the time factor is added to the conventional numerical grid generation. The time dependent curvilinear coordinate system which coincides with a contour of moving boundary in a physical region is transformed into a fixed rectangular coordinate system. In a simple case, it is possible to choose the function between the physical region and the rectangular computational region. The FD-TD algorithm is exactly solved in this fixed rectangular coordinate system. In this paper, to apply the FD-TD algorithm for this method, the stability criterion in three dimensions is derived. A numerical approach for the analysis of electromagnetic field by a dielectric body moving parallel to the incident wave are described. For a rotating case, a transformation method are described. We are treating this method for a quasi-stationary field. Some numerical results are compared with the analytical ones and excellent agreements between them are obtained.