Study on the Creeping Ray-Tracing Algorithm of NURBS-UTD Method with the Source on Surface

WANG Nan; LIANG Chang-hong; ZHANG Yu

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Study on the Creeping Ray-Tracing Algorithm of NURBS-UTD Method with the Source on Surface

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- Study on the Creeping Ray-Tracing Algorithm of NURBS-UTD Method with the Source on Surface
- Acta Electronica Sinica Vol. 35, Issue 12, Pages: 2307-2311(2007)
- 作者机构：
  
  西安电子科技大学天线与微波技术国家重点实验室,陕西,西安,710071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN011TN821
- Published：2007
- 稿件说明：
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WANG Nan, LIANG Chang-hong, ZHANG Yu. Study on the Creeping Ray-Tracing Algorithm of NURBS-UTD Method with the Source on Surface[J]. Acta Electronica Sinica, 2007, 35(12): 2307-2311.
DOI：

WANG Nan, LIANG Chang-hong, ZHANG Yu. Study on the Creeping Ray-Tracing Algorithm of NURBS-UTD Method with the Source on Surface[J]. Acta Electronica Sinica, 2007, 35(12): 2307-2311. DOI：

摘要

辐射源位于凸曲面上的一致性几何绕射理论(UTD)在分析设计电大尺寸平台上天线的应用广泛

本文给出了一种源点位于任意光滑凸曲面上的UTD爬行波射线寻迹算法

使用数值的微分几何方法对暗区爬行波射线进行寻迹.对目标模型引入非均匀有理B样条(NURBS)曲面进行建模

这使得UTD方法可以应用于以往板、柱、锥模型以外的任意光滑曲面模型.本文算法可应用于任意曲面上

数值结果表明了本文算法的有效性及工程适用性.

Abstract

UTD method with the radiant source on convex surface is widely used in analyzing and designing of antennas mounted on electrically large targets and a creeping ray tracing algorithm of UTD method is given when the radiant point is on arbitrary convex surface.The creeping rays in shadow region were traced by numerical differential geometry measures.The Non-Uniform Rational B-splines surfaces were introduced to model the targets

which makes the UTD method able to be applied to arbitrary surfaces.The algorithm given can be applied to arbitrary surfaces

the validity and usefulness can be seen from numerical results.

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Related Institution

（西安电子科技大学天线与微波技术国家重点实验室，，）

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