Dr. Jingquan Cheng Profile

Dr. Jingquan Cheng

Engineer at National Radio Astronomy Observatory

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Publications (18)

Proceedings Article | 19 October 2016 Paper

Optical design study of the Wide Field Survey Telescope (WFST)

Zheng Lou, Ming Liang, Dazhi Yao, Xianzhong Zheng, Jingquan Cheng, Hairen Wang, Wei Liu, Yuan Qian, Haibin Zhao, Ji Yang

Proceedings Volume 10154, 101542A (2016) https://doi.org/10.1117/12.2248371

KEYWORDS: Optical design, Telescopes, Active optics

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Proceedings Article | 27 July 2016 Paper

Prototyping and environmental experiments of an aluminum panel for the Dome A 5m Terahertz Explorer (DATE5)

Zheng Lou, Yuan Qian, Yingxi Zuo, Hairen Wang, Jingquan Cheng, Ji Yang, Yuan Lu, Huan Zhang

Proceedings Volume 9906, 99061P (2016) https://doi.org/10.1117/12.2231553

KEYWORDS: Aluminum, Reflector telescopes, Telescopes, Reflectors, Prototyping, Temperature metrology, Climatology, Reflector telescopes, Heat flux, Humidity, Photogrammetry

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Dome A 5m Terahertz Explorer (DATE5) is a proposed telescope to be deployed at Dome A, Antarctica to explore the excellent terahertz observation condition unique to the site. One of the key challenges of the telescope is to realize and maintain the required 10 μm rms overall reflector surface accuracy under the extreme site conditions and unmanned operating mode. Aluminum panels on carbon fiber backup structures is one of the candidate options for the 5 meter main reflector. For aluminum panels, three major technical risks were identified: 1) the large CTE of aluminum causes significant panel deformation due to the large seasonal soak temperature change; 2) internal stress may cause additional surface deformation when operating under a cold environment; 3) reflector panels working at Dome A run high risks of icing (which degrades antenna efficiency and increases noise) and automatic active de-icing mechanisms has to be implemented on the panels. In order to verify the feasibility of the aluminum panels for DATE5 and identify possible technical risks, a prototype panel was fabricated and went through rigorous tests. The manufacture error at the room temperature is 3.2 μm rms, which meets the budget. The panel surface is then measured at various ambient temperatures down to -60°C in a climate chamber using photogrammetric techniques. The additional surface error at the low temperatures is found to be mainly contributed by defocusing error, and the dependence of the panel focal length on temperature is well predictable. No additional surface error caused by internal stress has been observed. Next, the icing condition of the panel is analyzed and a prototype de-icing system based on polyimide film heaters was installed on the panel. The performance of the de-icing system was tested in a climate chamber as well as in the field experiments to simulate a variety of operating environments. The experiments indicate that the power required for de-icing the entire main reflector is less than 1kW and the temperature field produced by the de-icing system has trivial effect on the surface accuracy of the panel. This study indicates that aluminum panels have the potential to meet the reflector surface error budget under the harsh environment of Dome A.

Proceedings Article | 22 July 2016 Paper

Initial development of high-accuracy CFRP panel for DATE5 antenna

Yuan Qian, Zheng Lou, Xufeng Hao, Jing Zhu, Jingquan Cheng, Hairen Wang, Yingxi Zuo, Ji Yang

Proceedings Volume 9912, 99121D (2016) https://doi.org/10.1117/12.2231254

KEYWORDS: Telescopes, Prototyping, Antennas, Structural design, Carbon, Skin, Reflectors, Composites, Aluminum, Ions

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Proceedings Article | 17 September 2012 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 | 7 August 2010 Paper

Design and analysis of a lightweight prestressed antenna back-up structure

Zengxiang Ma, Dehua Yang, Jingquan Cheng

Proceedings Volume 7733, 77333Q (2010) https://doi.org/10.1117/12.856229

KEYWORDS: Antennas, Structural design, Finite element methods, Reflectors, Structural analysis, Radio telescopes, Metals, Sun, Beam shaping, Astronomical imaging

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Proceedings Article | 6 August 2010 Paper

Field of view and coma correction of a two mirror off-axis system

Jingquan Cheng, Xinnan Li, Ming Liang, Brian Mason

Proceedings Volume 7733, 77335J (2010) https://doi.org/10.1117/12.855878

KEYWORDS: Monochromatic aberrations, Mirrors, Off axis mirrors, Infrared telescopes, Radio optics, Infrared radiation, Signal to noise ratio, Radio telescopes, Telescopes, Astronomy

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Proceedings Article | 5 August 2010 Paper

A scalable, cost-effective radio telescope drive and axis system

Silversun Sturgis, Jingquan Cheng, Xun Zhang, Dehua Yang

Proceedings Volume 7733, 77333K (2010) https://doi.org/10.1117/12.855910

KEYWORDS: Antennas, Telescopes, Radio telescopes, Manufacturing, Directed self assembly, Commercial off the shelf technology, Control systems, Computer programming, Radio astronomy, Synthetic apertures

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Proceedings Article | 23 July 2010 Paper

An innovative low-cost antenna dish built with commercial off-the-shelf (COTS) components

Jingquan Cheng, Jim Ruff, Silver Sturgis, Dehua Yang

Proceedings Volume 7739, 773930 (2010) https://doi.org/10.1117/12.854888

KEYWORDS: Antennas, Commercial off the shelf technology, Manufacturing, Telescopes, Metals, Tolerancing, Finite element methods, Thermal modeling, Synthetic apertures, Reflectors

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Proceedings Article | 23 July 2010 Paper

Carbon fiber reinforced composites: their structural and thermal properties

Jingquan Cheng, Dehua Yang

Proceedings Volume 7739, 77392G (2010) https://doi.org/10.1117/12.855877

KEYWORDS: Carbon, Composites, Polymers, Structured optical fibers, Aluminum, Foam, Astronomical telescopes, Chemical species, Structural design, Manufacturing

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Proceedings Article | 22 July 2010 Paper

Study on a novel panel support concept for radio telescopes with active surface

Dehua Yang, Guohua Zhou, Daniel Okoh, Guoping Li, Jingquan Cheng

Proceedings Volume 7739, 77391G (2010) https://doi.org/10.1117/12.856989

KEYWORDS: Error analysis, Actuators, Radio telescopes, Telescopes, Reflectors, Prototyping, Active optics, Spherical lenses, Mirrors, Image segmentation

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Proceedings Article | 23 July 2008 Paper

Study of simple CFRP-metal joint failure

Jingquan Cheng, Antonio Rodriguez, Nicolas Emerson, Arthur Symmes

Proceedings Volume 7018, 70183F (2008) https://doi.org/10.1117/12.786667

KEYWORDS: Adhesives, Epoxies, Metals, Interfaces, Safety, Telescopes, Manufacturing, Temperature metrology, Liquids, Solids

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Proceedings Article | 29 September 2004 Paper

Application of photogrammetric technique to astronomical telescope measurement and control

Dehua Yang, Jingquan Cheng

Proceedings Volume 5495, (2004) https://doi.org/10.1117/12.551643

KEYWORDS: Photogrammetry, Cameras, Photography, Antennas, CCD cameras, Astronomical telescopes, Imaging systems, Reflectors, Telescopes, Image processing

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Proceedings Article | 17 February 2003 Paper

Design of a 50-m pulsar radio telescope

Dehua Yang, Shuangshuo Xue, Daxing Wang, Wenzhi Lu, Jingquan Cheng

Proceedings Volume 4855, (2003) https://doi.org/10.1117/12.459174

KEYWORDS: Telescopes, Reflectors, Optical instrument design, Radio telescopes, Servomechanisms, Control systems, Control systems design, Finite element methods, Astronomy, Observatories

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Proceedings Article | 4 February 2003 Paper

Thermal shape change of some CFRP-aluminum honeycomb sandwiched structures

Jingquan Cheng

Proceedings Volume 4837, (2003) https://doi.org/10.1117/12.458003

KEYWORDS: Temperature metrology, Aluminum, Space telescopes, Telescopes, Skin, Carbon, Finite element methods, Radio astronomy, Observatories, Structured optical fibers

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Proceedings Article | 3 July 2000 Paper

Design of carbon fiber composite antenna dishes

Jingquan Cheng

Proceedings Volume 4015, (2000) https://doi.org/10.1117/12.390457

KEYWORDS: Carbon, Composites, Antennas, Manufacturing, Structured optical fibers, Aluminum, Adhesives, Foam, Design for manufacturability, Solar radiation

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Proceedings Article | 31 July 1998 Paper

12-m antenna design for a joint US-European array

Jingquan Cheng, Jeffrey Kingsley

Proceedings Volume 3357, (1998) https://doi.org/10.1117/12.317399

KEYWORDS: Antennas, Sensors, Receivers, Mirrors, Aluminum, Calibration, Fast packet switching, Structural design, Computer programming, Distortion

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Proceedings Article | 31 July 1998 Paper

Antenna design for the Millimeter Array

John Lugten, Jingquan Cheng, Matthew Fleming, Jeffrey Kingsley

Proceedings Volume 3357, (1998) https://doi.org/10.1117/12.317380

KEYWORDS: Antennas, Sensors, Receivers, Astronomy, Switching, Mirrors, Aluminum, Reflectors, Radio astronomy, Refraction

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Proceedings Article | 1 July 1990 Paper

High-image-quality Mersenne-Schmidt system and its comparison with classical Schmidt camera

Jingquan Cheng, Ming Liang

Proceedings Volume 1236, (1990) https://doi.org/10.1117/12.19274

KEYWORDS: Telescopes, Mirrors, Astronomy, Cameras, Image quality, Optical telescopes, Imaging systems, Spherical lenses, Stars, Monochromatic aberrations

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Showing 5 of 18 publications

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