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Robust CCD photoelectric autocollimator for outdoor use |
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| Authors: | Min Gao Zuoren Dong Zhenglan Bian Qing Ye Zujie Fang Ronghui Qu Shanghai Key Laboratory of All Solid-state Laser Applied Techniques |
| Institution: | Min Gao1,2,Zuoren Dong 1,Zhenglan Bian1,Qing Ye 1,Zujie Fang 1,and Ronghui Qu 1 1 Shanghai Key Laboratory of All Solid-state Laser and Applied Techniques,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China |
| Abstract: | A robust charge-coupled device(CCD) photoelectric autocollimator for outdoor use is designed and demon-strated. The influence of outdoor conditions on the signal-to-noise ratio(SNR) and imaging quality of the measuring system is experimentally analyzed. The pulse width modulation technology is applied to the automatic feedback control of the actively regulated illuminating light source of the measuring system to maximize SNR while avoiding image saturation. A Fourier phase shift method for subpixel estimati... |
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