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A constant speed parametrization (CSP) mapping of boundary surfaces is proposed for moment-method analysis of antennas and scatterers, along with its approximation using large higher-order Lagrange-type curved quadrilateral patches. The importance of the proper placement of interpolation nodes that ensures minimum mapped parametric space distortion (arc-length parametrization) is explained and demonstrated on simple examples. The CSP mapping results in on average five times lower radar cross section (RCS) error for a spherical scatterer than with the ray casting (central projection) parametrization mapping. The extension of the CSP concept to arbitrary surfaces is illustrated in modeling of the double-ogive target.
Published in:
Antennas and Wireless Propagation Letters, IEEE
(Volume:10
)
Date of Publication: 2011
- Page(s):
- 1457 - 1460
- ISSN :
- 1536-1225
- INSPEC Accession Number:
- 12428164
- Digital Object Identifier :
- 10.1109/LAWP.2011.2180354
- Product Type:
- Journals & Magazines
- Date of Publication :
- 16 December 2011
- Date of Current Version :
- 02 January 2012
- Issue Date :
- 2011
- Sponsored by :
- IEEE Antennas and Propagation Society
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