| Citation: | YU Feng, XU Nana, ZHAO Zhenminget al. On-orbit temperature analysis and thermal design optimization for camera on GF-4 satellite[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(1): 177-186. doi: 10.13700/j.bh.1001-5965.2020.0053(in Chinese)
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With the increase of space camera resolution, the requirements for temperature stability and uniformity of the optical system and the main load-carrying construction become higher and higher. It is a big challenge for the high-precision thermal control design of the Geostationary Orbit (GEO) camera due to the complicated space environment. According to the difficulties and characteristics of the GF-4 satellite camera's thermal control design, based on the design concept of integration thermal control design, thermal control technologies such as heat flow shield at the optical entrance, indirect radiation thermal control and coupled heat radiating surfaces are adopted to achieve high-precision temperature control; the temperature data of the camera in orbit for four years and the corresponding conditions are analyzed, the correctness of the camera's thermal control design is verified, and optimization suggestions are proposed based on the operation conditions in orbit. The thermal design methods also provide support for further improving the temperature control accuracy and reducing the thermal control resources of the geostationary orbit cameras.
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