Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Zhongyou Liu"'
Autor:
Jian YANG1, Zhongyou LIU1 asiaar@163.com
Publikováno v:
Asian Agricultural Research. Feb2022, Vol. 14 Issue 2, p10-13. 4p.
Publikováno v:
Journal of Geography and Cartography. 5:30
Objective: to achieve accurately and rapidly the mapping of agricultural land use and crop distribution at the township scale. Methods: this study, based on specific methods, such as, time-series remote sensing index threshold classification and maxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22ce1d8285c562a9cd663ad98e5b92d6
https://doi.org/10.24294/jgc.v5i1.1444
https://doi.org/10.24294/jgc.v5i1.1444
Autor:
Zhongyou Liu, Cong Yin, Jin Qian, Zuliang Lu, Lu Huang, Yan Yang, Tongbao Li, Jianbo Wang, Xinbin Cheng
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 65:2569-2577
We present our continuing work on the displacement determination of the guard electrode for the new vertical calculable capacitor. We describe a method for determining the displacement by actively locking the Fabry–Perot interferometer to a stabili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a818030f8f2bbb1fee7844b1b8b8c97
https://doi.org/10.1109/tim.2016.2583238
https://doi.org/10.1109/tim.2016.2583238
Publikováno v:
2018 Conference on Precision Electromagnetic Measurements (CPEM 2018).
This paper describes a diffraction correction of the displacement measurement in calculable capacitor. A mathematical model of the locking interferometer based on Gaussian beam propagation is set up. The phase difference between the two cavities of i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4fd38d493099bf16e24b72cb4c3b7471
https://doi.org/10.1109/cpem.2018.8500797
https://doi.org/10.1109/cpem.2018.8500797
Autor:
Qing He, Yan Yang, Wenjun Lu, Jin Qian, Jianting Zhao, Wei Wang, Zhonghua Zhang, Zuliang Lu, Zhongyou Liu, Yunfeng Lu, Jianbo Wang, Lu Huang, Xiuying Liu
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 64:1496-1502
A new type of calculable capacitor was initially built at the National Institute of Metrology, China, in cooperation with the National Measurement Institute, Australia. The capacitor realized the SI unit of capacitance at 1 pF, with an uncertainty of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de086e213b6ba05171d1ed29929bd880
https://doi.org/10.1109/tim.2015.2399012
https://doi.org/10.1109/tim.2015.2399012
Publikováno v:
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016).
This paper describes a new mechanical alignment of the interferometer in the calculable capacitor at NIM. This method is based on the directionality and aperture diffraction of laser light. At present, the new alignment has been completed and its ali
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::861506331b872904d69ec70a588b60c6
https://doi.org/10.1109/cpem.2016.7540586
https://doi.org/10.1109/cpem.2016.7540586
Publikováno v:
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016).
This paper presents the displacement determination of the guard electrode for the new vertical calculable capacitor at NIM. We take a new method for measuring the displacement by actively locking the Fabry-Perot interferometer to a stabilized laser a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17020251cfe4eec636f8d754bbb2172a
https://doi.org/10.1109/cpem.2016.7540587
https://doi.org/10.1109/cpem.2016.7540587
Autor:
Zhongyou Liu, Lu Huang, Zhuliang Lu, Xiuying Liu, Jianbo Wang, Jin Qian, Cong Yin, Tongbao Li
Publikováno v:
SPIE Proceedings.
A new type vertical calculable capacitor has been built at National Institute of Metrology (NIM) cooperated with National Measurement Institute of Australia (NMIA). The calculable capacitor is the highest accuracy equipment apparatus except the quant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d2d6154f6d2aeff522fc11127a03b9f
https://doi.org/10.1117/12.2071812
https://doi.org/10.1117/12.2071812
Autor:
Wei Wang, Yunfeng Lu, Wenjun Lu, Qian Jin, Zuliang Lu, Jianting Zhao, Q. He, Yan Yang, Zhonghua Zhang, Zhongyou Liu, Jianbo Wang, Xiuying Liu, Huang Lu
Publikováno v:
29th Conference on Precision Electromagnetic Measurements (CPEM 2014).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e9d2f658794bf2166d678b2820254f0
https://doi.org/10.1109/cpem.2014.6898283
https://doi.org/10.1109/cpem.2014.6898283
Publikováno v:
Fifth International Symposium on Instrumentation and Control Technology.
This paper presents a measurement system that can measure micro displacement by laser interference and image process methods. The displacement is measured by testing the relative moving distance between the movable mirror and the fixed mirror. Based
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e401fdd30e22dc10690a1e775156f6a9
https://doi.org/10.1117/12.521907
https://doi.org/10.1117/12.521907