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A chord-angle method is proposed for the precise optical measurement of the surface contour of large and medium size
paraboloid antenna. The possible errors of the proposed method are theoretically analyzed as a whole. The antenna
surface measurement precision is controlled and adjusted by measuring the angle and chord length of the measuring
target point on the antenna surface. The effectiveness of the proposed method is verified through measurements.
Experimental results indicate that the chord-angle method is effective and it has wide application prospect. Compared to
the conventional template method, this direct measurement method has higher precision and better applicability.
Long Shen,Zhenbang Gong,Liang Liu, andShiliang Yang
"Precise optical measurement of surface contour of large paraboloid antenna", Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 71333H (12 January 2009); https://doi.org/10.1117/12.808391
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Long Shen, Zhenbang Gong, Liang Liu, Shiliang Yang, "Precise optical measurement of surface contour of large paraboloid antenna," Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 71333H (12 January 2009); https://doi.org/10.1117/12.808391