Prof. Yong Zhang Profile

Prof. Yong Zhang

Prof. at National Astronomical Observatories CAS

SPIE Involvement:

Author

Area of Expertise:

Active Optics , Digital Image Processing , Optical Test , Adaptive Optics , Computer Programming , Astronomical Instrumentation

Websites:

Personal Website | Company Website

Profile Summary

Mainly engaged in LAMOST(www.lamost.org) Telescope construction, focusing on active optics.
Now focused in segmented mirror and deformable mirror active optics, adaptive optics, active reflector for future extremely large optical and radio telescopes.

Publications (21)

SPIE Journal Paper | 5 December 2023

Evaluation method to obtain a fiducial fiber metrology benchmark for the Large Sky Area Multi-Object Fiber Spectroscopic Telescope

Ziming Liu, Congcong Du, Yingfu Wang, Shipeng Duan, Zhigang Liu, Hongzhuan Hu, Jianping Wang, Jiaru Chu, Xiangqun Cui, Yong Zhang, Haotong Zhang, Zengxiang Zhou

JATIS, Vol. 9, Issue 04, 044002, (December 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.4.044002

KEYWORDS: Calibration, Cameras, Imaging systems, Visualization, Metrology, Laser soldering, Photography, Telescopes, Camera calibration, Fiber lasers

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Realizing accurate positioning with the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) closed-loop system depends on accurate high-precision calibration of the visual measurement system, which has a great impact on collision avoidance and accurate positioning. We designed fiducial fibers for the calibration of the LAMOST closed-loop system to provide accurate fiducial positions for visual measurement. The benchmark position accuracy of the fiducial fibers is a key factor affecting the accuracy of the visual measurement system; the more accurate the fiducial fiber positions are, the higher the visual measurement correction accuracy. In this study, three measurement methods were used to obtain the fiducial fiber positions, namely, measuring the hole positions using a coordinate measuring machine, imaging the fiducial fibers using a calibrated photographic system, and directly measuring the fiducial fiber spatial positions using a laser tracker. By evaluating the fiber positions obtained via the three methods, we can obtain a stable and reliable fiducial fiber position benchmark. A fiducial fiber positions evaluation method based on an optimal residual criterion is proposed, and the optimal residual solution for a small calibration target (SCT) is used to evaluate the optimal fiducial fiber measurement method. Specifically, the fiducial positions obtained via each of the three methods are used to invert the camera calibration parameters, which are then used to calculate the physical position of an SCT. Finally, the residual value between the calculated and theoretical positions is taken as the standard for evaluating the fiducial fiber measurement benchmark performance. The results show that the fiducial fiber positions measured using the laser tracker can be applied to effectively calibrate the photographic system, enabling the LAMOST vision measurement system to achieve a positioning accuracy of nearly 10 μm with the camera 20 m from the focal surface, whereas the accuracy is within 20 μm for ∼95 % of the measurement points.

Proceedings Article | 29 August 2022 Paper

Paper

Research on a new position actuator control technology for segmented primary mirror telescopes

Hao Li, Guohua Zhou, Qishuai Lu, Heng Zuo, Yong Zhang

Proceedings Volume 12182, 121823K (2022) https://doi.org/10.1117/12.2631303

KEYWORDS: Actuators, Telescopes, Mirrors, Segmented mirrors, Astronomy, Active optics, Control systems design

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

New high-accuracy solar guiding test technology

Tian-Zhu Hu, Yong Zhang, Ye-Ping Li, Yue-Fei Wang

Proceedings Volume 11451, 1145147 (2020) https://doi.org/10.1117/12.2574338

KEYWORDS: Solar telescopes, Astrophysics, Solar processes

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SPIE Journal Paper | 30 October 2018

Extracting the centroid of the light spot by two-dimensional sigmoid fitting

Hui Zhang, Guoping Li, Yong Zhang, Shouwei Hu

OE, Vol. 57, Issue 10, 104113, (October 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.10.104113

KEYWORDS: Filtering (signal processing), Detection and tracking algorithms, Signal to noise ratio, Edge detection, Optical engineering, Charge-coupled devices, Optical sensing, Image processing, Algorithms, Lithium

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Proceedings Article | 6 July 2018 Paper

Paper

The research progress of eddy current edge sensors for Chinese Extremely Large Telescope

Jijun Ni, Wei Li, Jing Yin, Chengliang Pan, Yong Zhang

Proceedings Volume 10700, 1070063 (2018) https://doi.org/10.1117/12.2312584

KEYWORDS: Sensors, Prototyping, Temperature metrology, Large telescopes, Nanoimprint lithography, Segmented mirrors, Resistance, Astronomical imaging, Mirrors, Sensing systems

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Proceedings Article | 22 July 2014 Paper

Paper

Latest progress of LAMOST primary co-phasing experiment in NIAOT, China

Yong Zhang, Xiangqun Cui, Hongmei Li, Jijun Ni, Aihua Li, Zhengqiu Yao, Xuefei Gong, Genrong Liu, Yuefei Wang, Yeping Li, Yizhong Zeng, Guohua Zhou

Proceedings Volume 9145, 91454W (2014) https://doi.org/10.1117/12.2055762

KEYWORDS: Sensors, Active optics, James Webb Space Telescope, Telescopes, Space telescopes, Mirrors, Actuators, Segmented mirrors, Image segmentation, Astronomical telescopes

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Proceedings Article | 22 July 2014 Paper

Paper

Research progress of co-phasing inductance edge sensor for Chinese extremely large telescope

Yong Zhang, Qimeng Wang, Yeping Li, Guohua Zhou, Jijun Ni, Aihua Li, Hongmei Li, Yizhong Zeng

Proceedings Volume 9145, 91454Y (2014) https://doi.org/10.1117/12.2056332

KEYWORDS: Sensors, Telescopes, Active optics, Astronomical telescopes, James Webb Space Telescope, Mirrors, Segmented mirrors, Space telescopes, Inductance, Large telescopes

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Proceedings Article | 22 July 2014 Paper

Paper

Upgradation progress of 13.7m millimeter radio telescope reflector surface maintenance test

Yong Zhang, Dehua Yang, Guohua Zhou, You Wang, Aihua Li, Yeping Li, Anfang Liu, Yizhong Zeng, Guoping Li, Qimeng Wang

Proceedings Volume 9145, 914540 (2014) https://doi.org/10.1117/12.2056082

KEYWORDS: Reflectors, Radio telescopes, Laser metrology, Telescopes, Metrology, Sensors, Antennas, Astronomical imaging, Laser systems engineering, Actuators

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Proceedings Article | 27 September 2012 Paper

Paper

Progress of the active reflector antenna using laser angle metrology system

Yong Zhang, Jie Zhang, Dehua Yang, Guohua Zhou, Aihua Li, Guoping Li

Proceedings Volume 8444, 84444Y (2012) https://doi.org/10.1117/12.923642

KEYWORDS: Reflectors, Radio telescopes, Antennas, Laser metrology, Laser systems engineering, Metrology, Precision measurement, Telescopes, Astronomical imaging, Sensors

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Proceedings Article | 17 September 2012 Paper

Paper

Conceptual design of a 5-m terahertz telescope at Dome A

Dehua Yang, Hai Wang, Yong Zhang, Yi Chen, Guohua Zhou, Jingquan Cheng, Guoping Li

Proceedings Volume 8444, 84445B (2012) https://doi.org/10.1117/12.925778

KEYWORDS: Telescopes, Control systems, Optical instrument design, Receivers, Reflectors, Domes, Antennas, Space telescopes, Electronics, Computer programming

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Proceedings Article | 17 September 2012 Paper

Paper

An active surface upgrade for the Delingha 13.7-m Radio Telescope

Dehua Yang, Yong Zhang, Guohua Zhou, Aihua Li, Kunxin Chen, Zhenchao Zhang, Guoping Li, Yingxi Zuo, Ye Xu

Proceedings Volume 8444, 84444B (2012) https://doi.org/10.1117/12.925789

KEYWORDS: Actuators, Telescopes, Radio telescopes, Space telescopes, Laser metrology, Metrology, Laser systems engineering, Device simulation, Optical instrument design, Electromagnetic coupling

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Proceedings Article | 17 September 2012 Paper

Paper

Outdoors phasing progress of dispersed fringe sensing technology in NIAOT, China

Yong Zhang, Xiangqun Cui, Genrong Liu, Yuefei Wang, Jijun Ni, Hongmei Li, Yizhong Zeng, Aihua Li, Yeping Li, Zhixu Wu

Proceedings Volume 8444, 844461 (2012) https://doi.org/10.1117/12.923693

KEYWORDS: Sensors, Calibration, Active optics, Mirrors, Segmented mirrors, Telescopes, Sensor calibration, James Webb Space Telescope, Actuators, Astronomical telescopes

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Proceedings Article | 13 September 2012 Paper

Paper

Study on functional integration of the SKA and the solar thermal power system

Zhi-Ming Dong, Dehua Yang, Yong Zhang, Xuebin Zhou

Proceedings Volume 8450, 84505Q (2012) https://doi.org/10.1117/12.925360

KEYWORDS: Solar thermal energy, Reflectors, Control systems, Mirrors, Sun, Radio telescopes, Solar energy, Reflectivity, Antennas, Radio astronomy

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Proceedings Article | 7 August 2010 Paper

Paper

An indoor three-mirror phasing experiment system based on a dispersed Hartmann type sensor

Yong Zhang, Xiangqun Cui, Genrong Liu, Yuefei Wang, Yeping Li, Yajun Zhang, Liang Zhang, Yizhong Zeng

Proceedings Volume 7733, 773352 (2010) https://doi.org/10.1117/12.856751

KEYWORDS: Sensors, Mirrors, Segmented mirrors, Active optics, Large telescopes, Telescopes, Calibration, Optics manufacturing, Wavefronts, Astronomical imaging

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Proceedings Article | 6 August 2010 Paper

Paper

A new efficient laser angle metrology system for maintaining the Large Radio Telescope active reflecting antenna

Yong Zhang, Dehua Yang, Yeping Li, Guohua Zhou, Aihua Li, Guoping Li, Zhenchao Zhang

Proceedings Volume 7733, 77333M (2010) https://doi.org/10.1117/12.856747

KEYWORDS: Antennas, Radio telescopes, Laser metrology, Laser systems engineering, Metrology, Prototyping, Sensors, Telescopes, Mirrors, Actuators

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Proceedings Article | 5 August 2010 Paper

Paper

Control system of a dispersed fringe type sensing system of active optics

Yajun Zhang, Zhenchao Zhang, Yong Zhang

Proceedings Volume 7736, 77364Q (2010) https://doi.org/10.1117/12.856342

KEYWORDS: Actuators, Control systems, Optical fibers, Mirrors, Active optics, Sensors, Segmented mirrors, Control systems design, Astronomy, Telescopes

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Proceedings Article | 4 August 2010 Paper

Paper

The optical performance of LAMOST telescope

Xiangqun Cui, Ding-qiang Su, Ya-nan Wang, Guoping Li, Genrong Liu, Yong Zhang, Yeping Li

Proceedings Volume 7733, 773309 (2010) https://doi.org/10.1117/12.856686

KEYWORDS: Telescopes, Active optics, Mirrors, Spectroscopy, Image quality, Deformable mirrors, Astronomical telescopes, Astronomical imaging, Reflector telescopes, Wavefront sensors

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Proceedings Article | 10 July 2008 Paper

Paper

Progress of LAMOST wavefront sensing

Yong Zhang

Proceedings Volume 7012, 70123H (2008) https://doi.org/10.1117/12.785673

KEYWORDS: Active optics, Wavefront sensors, Image segmentation, Telescopes, Segmented mirrors, Image quality, Mirrors, Stars, Astronomical imaging, Light sources

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Proceedings Article | 28 June 2006 Paper

Paper

Low-order AO system in LAMOST

Xiangyan Yuan, Xiangqun Cui, Genrong Liu, Yong Zhang, Yongjun Qi

Proceedings Volume 6272, 62723O (2006) https://doi.org/10.1117/12.669749

KEYWORDS: Adaptive optics, Monochromatic aberrations, Mirrors, Deformable mirrors, Telescopes, Wavefronts, Active optics, Actuators, Spherical lenses, Photovoltaics

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Proceedings Article | 26 June 2006 Paper

Paper

Experimental research on the sampling point number of LAMOST active optics wavefront test

Yong Zhang

Proceedings Volume 6267, 626735 (2006) https://doi.org/10.1117/12.669458

KEYWORDS: Wavefronts, Monochromatic aberrations, Active optics, Wavefront sensors, Optical testing, Mirrors, Autocollimation, Data corrections, Telescopes, Absorbance

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Proceedings Article | 28 September 2004 Paper

Paper

Experiment system of LAMOST active optics

Xiangqun Cui, Ding Su, Guoping Li, Zhengqiu Yao, Zhengcao Zhang, Yeping Li, Yong Zhang, You Wang, Xinqi Xu, Hai Wang

Proceedings Volume 5489, (2004) https://doi.org/10.1117/12.552426

KEYWORDS: Mirrors, Active optics, Wavefronts, Actuators, Wavefront sensors, Telescopes, Control systems, Segmented mirrors, Deformable mirrors, Spherical lenses

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Showing 5 of 21 publications

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