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�������պ����ѧѧ�� 2003, Vol. 29 Issue (7) :607-610    DOI:
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Research on high-efficiency arithmetic to improve ray trace method
Huang Peilin, Wu Zhe*
Dept. of Flight Vehicle Design and Applied Mechanics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� A new technique named local aperture grid optimization arithmetic was presented to improve the efficiency of the classical method. The chief aperture that contains all the rays in the incident field was divided into local aperture grids, on which selected sampling rays was calculated to determine its contribution level.Pre-defined calculation level was used to determine whether to calculate the rest rays on the local aperture or not. Therefore the rays that have no or little RCS contribution were neglected and the calculating time consumed on intersecting judgment was reduced. By programming examination, the optimization arithmetic was proved to be fairly precise and remarkably efficient, and also applied.
Keywords�� coupling   ray trace   aperture     
Received 2002-05-10;
About author: ������(1975-),��,����ʮ����,��ʿ��, peilin h@sohu.com.
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������, ����.һ������׷�ٷ���Ч�ʸĽ��㷨�о�[J]  �������պ����ѧѧ��, 2003,V29(7): 607-610
Huang Peilin, Wu Zhe.Research on high-efficiency arithmetic to improve ray trace method[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2003,V29(7): 607-610
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2003/V29/I7/607
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