北京航空航天大学学报 ›› 2000, Vol. 26 ›› Issue (2): 137-140.

• 论文 • 上一篇    下一篇

C-R样条用于低散射目标爬行波求解

宁焕生, 杨志凌, 王宝发   

  1. 北京航空航天大学 电子工程系
  • 收稿日期:1998-10-19 出版日期:2000-02-29 发布日期:2010-09-27
  • 作者简介:宁焕生(1975-),男,安徽怀宁人,博士生,100083,北京.
  • 基金资助:

    国家部委基金资助项目

C-R Spline Fitting Theory for the RCS Computation \=of Low-Scattering Targets

NING Huan-sheng, YANG Zhi-ling, WANG Bao-fa   

  1. Beijing University of Aeronautics and Astronautics,Dept. of Electronic Engineering
  • Received:1998-10-19 Online:2000-02-29 Published:2010-09-27

摘要: C-R(Catmull-Rom)样条具有直观、稳定、灵活、不需反求控制顶点等优点,特别适用于具有复杂外形的飞行器进行几何描述. 利用 (G1,k=1) Catmull-Rom样条及其张量积曲面对低散射目标进行几何建模,并求解低散射目标爬行波RCS贡献,通过计算结果与实验结果比较,获得令人满意的结果.

Abstract: The geometric modelling and electromagnetic scattering characteristics of complex targets are discussed. In order to overcome the insufficiency of some other spline functions, the contour fitting of the targets was made conveniently and correctly by using Catmull-Rom spline fitting function. To the low RCS target, the effect of creeping wave is remarkable and larger than that of facets and wedges in some cases. Based on the C-R spline fitting theory, the problem of computing geodesic has been solved and a practical computing example of Low-RCS target fully proves the validity of the method by using the hybrid method of GRECO(Graphical Electromagnetic Computing) and creeping wave theory. the results can have practical engineering worth.

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