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�������պ����ѧѧ�� 2011, Vol. 37 Issue (6) :723-727    DOI:
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�ܹ���, ������*
�������պ����ѧ ��е���̼��Զ���ѧԺ, ���� 100191
Base on semi-optical path difference of antenna reflector surface accuracy detection
Zhou Guofeng, Li Xiaoxing*
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� The selection of minimum value of surface fitting is one of the key technologies refer to the antenna panel surface detection. The antenna surface root-mean-square of semi-optical path difference is an index of antenna surface accuracy. A direct calculation method of semi-optical path difference (OPD) was presented according to the geometric definition of conic surface and its optical properties. The nonlinear least squares curve fitting algorithm based on the semi-optical path difference was described. Employing a parabolic reflector panel as the sample, through simulation and actual measurements, the fitting results were contrastively analyzed while selected axial deviation and semi-optical path difference as minimum value respectively. The experiments verifying the fitting method based on semi-optical path difference is more precision and stability.
Keywords�� semi-optical path difference   conic surface fitting   nonlinear least squares   antenna surface detection     
Received 2010-07-08;


About author: �ܹ���(1982-),��,���������,��ʿ��,adian@me.buaa.edu.cn.
�ܹ���, ������.���ڰ��̲�����߷��������澫�ȼ��[J]  �������պ����ѧѧ��, 2011,V37(6): 723-727
Zhou Guofeng, Li Xiaoxing.Base on semi-optical path difference of antenna reflector surface accuracy detection[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(6): 723-727
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