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�������պ����ѧѧ�� 2004, Vol. 30 Issue (03) :254-257    DOI:
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����ܲ, ����, ϯƽ*
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Technique based on surface element of prepositive disposal in predicting RCS of aircraft
Li Xiuyi, Ning Tao, Xi Ping*
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.
Keywords�� flight vehicles   curved surface   radar cross section   non-uniform rational B-spline   Bézier surface     
Received 2002-11-12;
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About author: ����ܲ(1981-),��,����������,˶ʿ��, lixiuyi@sina.com.
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����ܲ, ����, ϯƽ.������RCSԤ������ǰ�ô��������Ԫ����[J]  �������պ����ѧѧ��, 2004,V30(03): 254-257
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 A, 2004,V30(03): 254-257
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2004/V30/I03/254
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