Calculation of the Double Reflection Between Objects Modeled by NURBS Surfaces

CHEN Xiao-jie; WANG Meng; SHI Xiao-wei

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Calculation of the Double Reflection Between Objects Modeled by NURBS Surfaces

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- Calculation of the Double Reflection Between Objects Modeled by NURBS Surfaces
- Acta Electronica Sinica Vol. 36, Issue 6, Pages: 1154-1157(2008)
- 作者机构：
  
  1. 西安电子科技大学天线与微波国家重点实验室,陕西,西安,710071
  2. 中国舰船研究院,北京,100192
  3. 西安电子科技大学天线与微波国家重点实验室陕西西安,710071
  4. 中国舰船研究院北京,100192
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN011
- Published：2008
- 稿件说明：
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CHEN Xiao-jie, WANG Meng, SHI Xiao-wei. Calculation of the Double Reflection Between Objects Modeled by NURBS Surfaces[J]. Acta Electronica Sinica, 2008, 36(6): 1154-1157.
DOI：

CHEN Xiao-jie, WANG Meng, SHI Xiao-wei. Calculation of the Double Reflection Between Objects Modeled by NURBS Surfaces[J]. Acta Electronica Sinica, 2008, 36(6): 1154-1157. DOI：

摘要

采用物理光学方法计算电大目标散射场时

模型间的二次散射场需要单独考虑.本文在物理光学方法的基础上

推导了用于计算NURBS(Non Uniform Rational B-Spline)模型间二次散射场的四重积分公式.该四重积分公式的求解是计算二次散射场的关键

因此又提出一种求解四重积分公式的方法:四重Ludwig算法.算例可以证明所推导的计算公式以及所提出的Ludwig四重积分算法的有效性.

Abstract

When PO(Physical Optics)method is used to calculate the scattered field of electrically large objects

the double reflection between two objects should be considered independently.The quadruple integration used to compute the double reflection between two perfect conducting objects modeled by NURBS surfaces was derived by PO approximation.The quadruple Ludwig algorithm was presented to compute the quadruple integration which is the key of the computation of the double reflected field.The example shows that the formula and the integration are both valid.

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