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Proceedings Paper

Analysis the processing algorithm for the frequency measurement variance of the acousto-optic spectrum analyzer
Author(s): Qi-rui He; Lu Gan; Ying Zhou; Chun-ming Gao; Xi-ren Zhang
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Paper Abstract

When the acousto-optic device worked on the Bragg model, the non-liner affected the diffraction beam. There were some errors between the diffraction beam deflection peak position and the input signal’s frequency, which reduced the frequency measure accuracy of the acousto-optic spectrum analyzer. Under the existing optical experimental platform, we eliminated the CCD background noise by reducing the threshold firstly, and then we processed the data by four methods, the peak value method, the Gaussian fitting method, the squared cancroids method and the Hilbert transform method. The least frequency measure variance is 31.8 KHz2, the data processed by the Gaussian fitting method. It provides theoretical support for reducing the frequency measurement variance of acousto-optic spectrum analyzer.

Paper Details

Date Published: 7 August 2015
PDF: 6 pages
Proc. SPIE 9623, 2015 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 962315 (7 August 2015); doi: 10.1117/12.2193254
Show Author Affiliations
Qi-rui He, Univ. of Electronic Science and Technology of China (China)
Lu Gan, Univ. of Electronic Science and Technology of China (China)
Ying Zhou, Univ. of Electronic Science and Technology of China (China)
Chun-ming Gao, Univ. of Electronic Science and Technology of China (China)
Xi-ren Zhang, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 9623:
2015 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems
Jigui Zhu; Hwa-Yaw Tam; Kexin Xu; Hai Xiao; Sen Han, Editor(s)

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