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Title: DSI3D-RCS: Theory manual

Abstract

The DSI3D-RCS code is designed to numerically evaluate radar cross sections on complex objects by solving Maxwell`s curl equations in the time-domain and in three space dimensions. The code has been designed to run on the new parallel processing computers as well as on conventional serial computers. The DSI3D-RCS code is unique for the following reasons: Allows the use of unstructured non-orthogonal grids, allows a variety of cell or element types, reduces to be the Finite Difference Time Domain (FDTD) method when orthogonal grids are used, preserves charge or divergence locally (and globally), is conditionally stable, is non-dissipative, is accurate for non-orthogonal grids. This method is derived using a Discrete Surface Integration (DSI) technique. As formulated, the DSI technique can be used with essentially arbitrary unstructured grids composed of convex polyhedral cells. This implementation of the DSI algorithm allows the use of unstructured grids that are composed of combinations of non-orthogonal hexahedrons, tetrahedrons, triangular prisms and pyramids. This algorithm reduces to the conventional FDTD method when applied on a structured orthogonal hexahedral grid.

Authors:
; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
102288
Report Number(s):
UCRL-ID-120581
ON: DE95016186
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 16 Mar 1995
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 66 PHYSICS; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; RADAR; D CODES; MAXWELL EQUATIONS; ELECTROMAGNETIC FIELDS; PARALLEL PROCESSING; FINITE DIFFERENCE METHOD; BOUNDARY CONDITIONS

Citation Formats

Madsen, N, Steich, D, Cook, G, and Eme, B. DSI3D-RCS: Theory manual. United States: N. p., 1995. Web. doi:10.2172/102288.
Madsen, N, Steich, D, Cook, G, & Eme, B. DSI3D-RCS: Theory manual. United States. https://doi.org/10.2172/102288
Madsen, N, Steich, D, Cook, G, and Eme, B. Thu . "DSI3D-RCS: Theory manual". United States. https://doi.org/10.2172/102288. https://www.osti.gov/servlets/purl/102288.
@article{osti_102288,
title = {DSI3D-RCS: Theory manual},
author = {Madsen, N and Steich, D and Cook, G and Eme, B},
abstractNote = {The DSI3D-RCS code is designed to numerically evaluate radar cross sections on complex objects by solving Maxwell`s curl equations in the time-domain and in three space dimensions. The code has been designed to run on the new parallel processing computers as well as on conventional serial computers. The DSI3D-RCS code is unique for the following reasons: Allows the use of unstructured non-orthogonal grids, allows a variety of cell or element types, reduces to be the Finite Difference Time Domain (FDTD) method when orthogonal grids are used, preserves charge or divergence locally (and globally), is conditionally stable, is non-dissipative, is accurate for non-orthogonal grids. This method is derived using a Discrete Surface Integration (DSI) technique. As formulated, the DSI technique can be used with essentially arbitrary unstructured grids composed of convex polyhedral cells. This implementation of the DSI algorithm allows the use of unstructured grids that are composed of combinations of non-orthogonal hexahedrons, tetrahedrons, triangular prisms and pyramids. This algorithm reduces to the conventional FDTD method when applied on a structured orthogonal hexahedral grid.},
doi = {10.2172/102288},
url = {https://www.osti.gov/biblio/102288}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {3}
}