Dr. Liangjie Feng Profile

Dr. Liangjie Feng

at Xi’an Institute of Optics and Precision Mechanics

SPIE Involvement:

Author

Publications (14)

Proceedings Article | 13 December 2021 Paper

Design of the active cooling focal plane component for the space astronomy telescope

Liangjie Feng, Chenjie Wang, Gangyi Zou

Proceedings Volume 12075, 1207505 (2021) https://doi.org/10.1117/12.2605265

KEYWORDS: Charge-coupled devices, Sensors, Space telescopes, Astronomical telescopes, Telescopes, Optical instrument design, Silicon carbide, Signal to noise ratio, Astronomy, Structural design

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Proceedings Article | 13 December 2021 Paper

The research of Φ1400mm SiC mirror for fabrication, test and alignment

Liangjie Feng, Gangyi Zou, Guorui Ren, Wei Wang

Proceedings Volume 12070, 120700G (2021) https://doi.org/10.1117/12.2605024

KEYWORDS: Mirrors, Distortion, Silicon carbide, Surface finishing, Polishing, Thermography, Optical fabrication, Optics manufacturing, Optical testing, Thermal effects

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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 | 14 August 2019 Paper

Remote sensing image fusion algorithm based on à trous wavelet transform and HIS transform

Hongqiang Xin, Liangjie Feng

Proceedings Volume 11179, 1117908 (2019) https://doi.org/10.1117/12.2539667

KEYWORDS: Wavelets, Wavelet transforms, Image filtering, Distortion, Visualization, 3D image reconstruction, Principal component analysis

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Proceedings Article | 6 May 2019 Paper

Research on image denoising algorithm based on improved anisotropic diffusion synthetic aperture radar

Hongqiang Xin, Liangjie Feng

Proceedings Volume 11069, 110692I (2019) https://doi.org/10.1117/12.2524184

KEYWORDS: Diffusion, Synthetic aperture radar, Digital filtering, Gaussian filters, Image enhancement

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Proceedings Article | 24 January 2019 Paper

Design and fabrication of CGH for 820mm diameter tertiary mirror surface figure testing without center hole

Zhihai Pang, Liangjie Feng, Jiaoteng Ding, Xuewu Fan, Zhen Ma

Proceedings Volume 10840, 1084019 (2019) https://doi.org/10.1117/12.2504889

KEYWORDS: Computer generated holography, Aspheric lenses, Diffraction, Optical testing, Optical alignment

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Proceedings Article | 11 January 2019 Paper

Manufacturing and testing of surface modified silicon carbide aspheric mirror

Jiao-teng Ding, Xue-wu Fan, Zhi-hai Pang, Liang-jie Feng, Qin-fang Chen, Zhen Ma

Proceedings Volume 10837, 108370V (2019) https://doi.org/10.1117/12.2504853

KEYWORDS: Mirrors, Polishing, Surface finishing, Silicon carbide, Silicon, Surface roughness, Ion beams

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Proceedings Article | 11 January 2019 Paper

Design of SiC mirror subsystem of a space-based astronomy telescope

Liang-jie Feng, Jiao-teng Ding, Gang-yi Zou

Proceedings Volume 10837, 108370A (2019) https://doi.org/10.1117/12.2504931

KEYWORDS: Mirrors, Silicon carbide, Distortion, Telescopes, Space telescopes, Astronomy, Optical instrument design, Astronomical telescopes, Optical fabrication, Astronomical imaging

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Proceedings Article | 19 October 2016 Paper

Development and alignment for SiC mirror subsystem of a space-borne telescope

Liangjie Feng, Wei Wang, Guorui Ren

Proceedings Volume 10154, 1015425 (2016) https://doi.org/10.1117/12.2247416

KEYWORDS: Silicon carbide, Mirrors, Space telescopes, Telescopes, Distortion

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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 | 15 October 2012 Paper

Design and performance experiment of ultraviolet off-axis TMA system

Liangjie Feng, Chenjie Wang, Xuewu Fan, Haosu Zhang, Zhihai Pang

Proceedings Volume 8417, 84173S (2012) https://doi.org/10.1117/12.978644

KEYWORDS: Ultraviolet radiation, Mirrors, Cameras, Optical alignment, Imaging systems, Off axis mirrors, Optical systems, Image intensifiers, Wavefronts, UV optics

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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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Showing 5 of 14 publications

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