Dr. Wengang Yang Profile

Dr. Wengang Yang

at Xi'an Institute of Optics and Precision Mechanics

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Author

Publications (9)

Proceedings Article | 13 December 2020 Paper

The Visible Telescope onboard the Chinese-French SVOM satellite

Xuewu Fan, Gangyi Zou, Jianyan Wei, Yulei Qiu, Wei Gao, Wei Wang, Wengang Yang, Jian Zhang, Chuang Li, Hui Zhao, Lijun Dan, Zongxi Song, Liangjie Feng, Guorui Ren, Chao Huang, Hao Yuan, Zhonghan Sun, Fengtao Wang, Chenjie Wang, Wei Li, Chao Shen, Ning Qi, Yue Pan

Proceedings Volume 11443, 114430Q (2020) https://doi.org/10.1117/12.2561854

KEYWORDS: Satellites, Telescopes, Charge-coupled devices, Astronomy, Visible radiation, Gamma radiation, Near infrared, Sensors, Control systems, Combined lens-mirror systems

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Proceedings Article | 28 February 2017 Paper

The cooling control system for focal plane assembly of astronomical satellite camera based on TEC

Yuqing He, Yunfei Du, Wei Gao, Baopeng Li, Xuewu Fan, Wengang Yang

Proceedings Volume 10256, 102562H (2017) https://doi.org/10.1117/12.2257422

KEYWORDS: Cooling systems, HVAC controls, Control systems, Astronomy, Cameras, Charge-coupled devices, CCD cameras, Control systems design, Satellites, Imaging systems

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Proceedings Article | 8 October 2015 Paper

Design and verification of focal plane assembly thermal control system of one space-based astronomy telescope

Wen-gang Yang, Xue-wu Fan, Chen-jie Wang, Ying-hao Wang, Liang-jie Feng, Yun-fei Du, Guo-rui Ren, Wei Wang, Chuang Li, Wei Gao

Proceedings Volume 9678, 96780Q (2015) https://doi.org/10.1117/12.2199517

KEYWORDS: Charge-coupled devices, Space telescopes, Telescopes, Staring arrays, Control systems design, Astronomy, Astronomical telescopes, Optical instrument design, Resistance, Satellites

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One space-based astronomy telescope will observe astronomy objects whose brightness should be lower than 23th magnitude. To ensure the telescope performance, very low system noise requirements need extreme low CCD operating temperature (lower than -65°C). Because the satellite will be launched in a low earth orbit, inevitable space external heat fluxes will result in a high radiator sink temperature (higher than -65°C). Only passive measures can’t meet the focal plane cooling specification and active cooling technologies must be utilized. Based on detailed analysis on thermal environment of the telescope and thermal characteristics of focal plane assembly (FPA), active cooling system which is based on thermo-electric cooler (TEC) and heat rejection system (HRS) which is based on flexible heat pipe and radiator have been designed. Power consumption of TECs is dependent on the heat pumped requirements and its hot side temperature. Heat rejection capability of HRS is mainly dependent on the radiator size and temperature. To compromise TEC power consumption and the radiator size requirement, thermal design of FPA must be optimized. Parasitic heat loads on the detector is minimized to reduce the heat pumped demands of TECs and its power consumption. Thermal resistance of heat rejection system is minimized to reject the heat dissipation of TECs from the hot side to the radiator efficiently. The size and surface coating of radiator are optimized to compromise heat reject ion requirements and system constraints. Based on above work, transient thermal analysis of FPA is performed. FPA prototype model has been developed and thermal vacuum/balance test has been accomplished. From the test, temperature of key parts and working parameters of TECs in extreme cases have been acquired. Test results show that CCD can be controlled below -65°C and all parts worked well during the test. All of these verified the thermal design of FPA and some lessons will be presented in this paper.

Proceedings Article | 8 October 2015 Paper

Design and analysis of supporting structure between the primary mirror and the secondary mirror on a space telescope

Chenjie Wang, Wenyi Chai, Liangjie Feng, Wengang Yang, Wei Wang, Xuewu Fan

Proceedings Volume 9678, 96780W (2015) https://doi.org/10.1117/12.2199672

KEYWORDS: Mirrors, Space telescopes, Telescopes, Optical instrument design, Space mirrors, Control systems, Satellites, Structural design, Thermal modeling, Thermal analysis

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Proceedings Article | 8 October 2015 Paper

Thermal design and simulation of an attitude-varied space camera

Chenjie Wang, Wengang Yang, Liangjie Feng, XuYang Li, Yinghao Wang, Xuewu Fan, Desheng Wen

Proceedings Volume 9678, 96780U (2015) https://doi.org/10.1117/12.2199666

KEYWORDS: Cameras, Heat flux, Device simulation, Mirrors, Satellites, Control systems, Planets, Thermal effects, Control systems design, Space mirrors

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Proceedings Article | 16 August 2013 Paper

A study on the application of ICCD in low light level remote sensing

Zhe Bai, Jian Zhang, Xue-wu Fan, Wen-gang Yang

Proceedings Volume 8912, 89121G (2013) https://doi.org/10.1117/12.2034745

KEYWORDS: Cameras, Charge-coupled devices, Imaging systems, Remote sensing, Signal to noise ratio, Microchannel plates, Electron multiplying charge coupled devices, Modulation transfer functions, Image intensifiers, Image resolution

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Proceedings Article | 15 October 2012 Paper

Thermal management for CCD peformance of one space telescope

Wengang Yang, Yinghao Wang, Liangjie Feng, Chenjie Wang, Guorui Ren, Wei Wang, Chuang Li, Wei Gao, Xuewu Fan

Proceedings Volume 8420, 84200P (2012) https://doi.org/10.1117/12.971510

KEYWORDS: Charge-coupled devices, Space telescopes, Heat flux, Sensors, Sun, Electronics, Surface finishing, Satellites, Infrared radiation, Reliability

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Proceedings Article | 16 November 2011 Paper

Precise thermal control of CCD assembly of space optical remote sensor

Wengang Yang, Yifan Li, Tianbing He, Zhe Bai, Xianghui Zhang, Yinghao Wang, Lei Yu, Weichun Fu, Yingcai Li

Proceedings Volume 8321, 83211V (2011) https://doi.org/10.1117/12.904832

KEYWORDS: Charge-coupled devices, Electronics, Thermography, Heat flux, Astronomical imaging, Optical fabrication, Space sensors, Remote sensing, CCD image sensors, Sensors

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Proceedings Article | 1 August 1990 Paper

Photogrammetry and remote sensing project in survey of the Emperor Qin Shi Huang's mausoleum

Dewen Song, Wengang Yang, PeiZhou Zhao

Proceedings Volume 1395, 13952F (1990) https://doi.org/10.1117/12.2294330

KEYWORDS: Photogrammetry, Photography, Remote sensing, Thermography, Infrared radiation, Machine vision, Glasses, Infrared imaging, Infrared photography, Thermometry

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Showing 5 of 9 publications

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