| 飞行器RCS预估计算前置处理的曲面元方法 |
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| 引用本文： | 李修懿,宁涛,席平.飞行器RCS预估计算前置处理的曲面元方法[J].北京航空航天大学学报,2004,30(3):254-257. |
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| 作者姓名： | 李修懿 宁涛 席平 |
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| 作者单位： | 北京航空航天大学 机械工程及自动化学院, 北京 100083 |
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| 摘 要： | 飞行器RCS预估计算是隐身技术研究的基础和重要研究内容.论述了利用计算机图形学方法,使用NURBS曲面和Bézier曲面进行飞行器RCS预估计算前置处理的方法.可以实现几何模型的消隐、拼合以及NURBS曲面向Bézier曲面的转化.结果表明该方法不同于以往基于平面元的预估方法,具有消隐效果好、精度高的特点.
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| 关 键 词： | 飞行器 曲面 雷达散射截面 非均匀有理B样条 Bézier曲面 |
| 文章编号： | 1001-5965(2004)03-0254-04 |
| 收稿时间： | 2002-11-12 |
| 修稿时间： | 2002年11月12日 |
Technique based on surface element of prepositive disposal in predicting RCS of aircraft |
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| Li Xiuyi,Ning Tao,Xi Ping.Technique based on surface element of prepositive disposal in predicting RCS of aircraft[J].Journal of Beijing University of Aeronautics and Astronautics,2004,30(3):254-257. |
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| Authors: | Li Xiuyi Ning Tao Xi Ping |
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| Institution: | School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | Predicting RCS(radar cross section) of aircraft is the basic and important content of technology. A technique for prepositive disposal in predicting RCS of aircraft by using computer graphic method and NURBS(non-uniform rational B-spline) surface and Bézier surface is presented. The technique can realize the shadowing calculation, regroup of geometrical model and the transfer from NURBS surface to Bézier surface. The result proved that the technique possess the character of good shadow effect and high precision which is differ from former predicting technique which is based on face element. |
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| Keywords: | flight vehicles curved surface radar cross section non-uniform rational B-spline Bézier surface |
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