NURBS模型间二次散射场的计算与应用  

Calculation of the Double Reflection Between Objects Modeled by NURBS Surfaces

作　　者：陈晓洁[1] 王萌[2] 史小卫[1] 

机构地区：[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

出　　处：《电子学报》2008年第6期1154-1157,共4页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60571057)

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.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.

关 键 词：物理光学 NURBS 二次散射 四重Ludwig积分算法 

分 类 号：TN011[电子电信—物理电子学]