A micro displacement measurement method based on PGC demodulation of space optics

Zhenyu Xiong; Xudong Yu; Xingwu Long; Youguang Guo

doi:10.1117/12.2257311

28 February 2017 A micro displacement measurement method based on PGC demodulation of space optics

Zhenyu Xiong, Xudong Yu, Xingwu Long, Youguang Guo

Proceedings Volume 10256, Second International Conference on Photonics and Optical Engineering; 102561Z (2017) https://doi.org/10.1117/12.2257311
Event: Second International Conference on Photonics and Optical Engineering, 2016, Xi'an, China

Abstract

An improved interferometric system aiming at measuring micro displacement is put forward on the basis of phase generated carrier(PGC) demodulation of space optics. This system can improve the accuracy of Absolute Gravimeter(AG) by measuring the amplitude and direction of ground vibration. While the carrier frequency is between 1K and 2K, ground vibration with low frequency (10Hz to 100Hz) and micro vibration amplitude (30nm to 300nm) can be obtained, which satisfies the requirements of AG.

Citation Download Citation

Zhenyu Xiong, Xudong Yu, Xingwu Long, and Youguang Guo "A micro displacement measurement method based on PGC demodulation of space optics", Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 102561Z (28 February 2017); https://doi.org/10.1117/12.2257311

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