Precise thermal control of space star camera and laser altimeter

Pan Lu; Teng Gao; Tao Yang; Chenhui Xia; Feng Yu

doi:10.1117/12.2682591

1 June 2023 Precise thermal control of space star camera and laser altimeter

Pan Lu, Teng Gao, Tao Yang, Chenhui Xia, Feng Yu

Proceedings Volume 12710, International Conference on Remote Sensing, Surveying, and Mapping (RSSM 2023); 127100H (2023) https://doi.org/10.1117/12.2682591
Event: International Conference on Remote Sensing, Surveying, and Mapping (RSSM 2023), 2023, Changsha, China

Abstract

The space star camera and altimeter set strict temperature rage and stability target, overmuch temperature fluctuate will make optical-mechanical deformation, decrease modulation transfer function (MTF), result in hot noise of Complementary Metal-Oxide-Semiconductors (CMOS) detector, decrease signal-to-noise ratio. The optical systems of the star camera and the laser altimeter are transmission lens and RC two-mirror lens respectively. The detectors of a star cameras are two CMOS; the laser altimeter includes six laser transmitters. To satisfy the requirements of thermal control index, thermal design multi-stage insulation technology for lens of star camera. Design thermal management for the laser altimeter’s heat sources. The thermal control system has been running for more than 2 years in space, under the extremely conditions in orbit, the temperature data show that the temperature fluctuation of lens is minimized to ±0.2℃, the temperature variation of CMOS and laser transmitters are less than ±0.1℃and ±0.2℃ respectively, which verify that the thermal control is appropriate.

Citation Download Citation

Pan Lu, Teng Gao, Tao Yang, Chenhui Xia, and Feng Yu "Precise thermal control of space star camera and laser altimeter", Proc. SPIE 12710, International Conference on Remote Sensing, Surveying, and Mapping (RSSM 2023), 127100H (1 June 2023); https://doi.org/10.1117/12.2682591

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