NDLI: A hybrid DGTD-FDTD method for RCS calculations

Content Provider	IEEE Xplore Digital Library
Author	Garcia, S.G. Pantoja, M.F. Bretones, A.R. Martin, R.G. Gedney, S.D.
Copyright Year	2007
Description	Author affiliation: Univ. of Granada, Granada (Garcia, S.G.; Pantoja, M.F.; Bretones, A.R.; Martin, R.G.)
Abstract	The Discontinuous Galerkin Time-Domain (DGTD) method is becoming a useful alternative to the classical Finite Difference Time-Domain (FDTD) method in order to overcome the inaccuracies of the latter when handling arbitrarily shaped geometries. DGTD takes advantage of a formulation very similar to that of the Finite Elements in Time Domain (FETD) with the same geometrical versatility. The main difference between both methods is that DGTD allows the solution to be discontinuous across contiguous elements, while FETD does not. This degree of freedom overcomes the fully implicit nature of FETD and significantly reduces computer requirements with a very low loss of accuracy. In this work, we first describe the fundamentals of DGTD. Then, we show some preliminary studies comparing the accuracy of DGTD and FETD in simple problems. Finally, we show a hybrid combination of FDTD and DGTD employing DGTD only to accurately model the geometric details of curved objects, while maintaining the simplicity of FDTD for the surrounding space. Radar Cross Section (RCS) results are used for validation.
Starting Page	3500
Ending Page	3503
File Size	246079
Page Count	4
File Format	PDF
ISBN	9781424408771
DOI	10.1109/APS.2007.4396292
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time domain analysis Finite element methods Finite difference methods Maxwell equations Testing Moment methods Geometry Solid modeling Radar cross section Integral equations
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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