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The application of the digital filtering algorithms in the signal processing system of the micro-displacement sensor
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Paper Abstract

In the Active Optical System, the precise measurement of the micro-displacement is the important evidence for the adjustment of the segmented mirrors and has great influence upon the full playing of the system’s optical performance. In this paper, both the median and adaptive filters are designed and simulated based on MatLab platform to remove the noises in the received signal of the micro-displacement sensor which has the features of low frequency, small amplitude and being susceptible to interference. The algorithms are also verified in the real micro-displacement measuring system. The results show that both of these two algorithms are effective and contribute to improve the system’s performance.

Paper Details

Date Published: 18 January 2019
PDF: 10 pages
Proc. SPIE 10839, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment, 108390C (18 January 2019); doi: 10.1117/12.2504870
Show Author Affiliations
Wusen Li, Nanjing Univ. of Science and Technology (China)
Wenjian Chen, Nanjing Univ. of Science and Technology (China)
Yongjun Qi, Nanjing Institute of Astronomical Optics & Technology (China)


Published in SPIE Proceedings Vol. 10839:
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment
Fan Wu; Yudong Zhang; Xiaoliang Ma; Xiong Li; Bin Fan, Editor(s)

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