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Proceedings Paper

Temperature environment of cameras on Hangtian-Tsinghua-1 microsatellite
Author(s): Luming Li; Jun Wu; Long Hu
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Paper Abstract

Satellite temperature will fluctuate during the circle from the Sun light to the Earth shadow, which may disturb the focusing job of the camera. That's the reason for positive thermal control been chosen for some satellites, particularly for the camera system. While for a micro satellite, considering the constraints of it, passive thermal control was preferred. The temperature range of camera will be a main consideration during micro satellite design. Hangtian-Tsinghua-1 (HT-TH-1) micro satellite, launched at Jun 28, 2000, is a joined mission of Tsinghua University and Surrey Space center. The imaging system on board, which has three cameras with 40-meter resolution, has been working perfectly after launch and a lot of pictures have been acquired. In view of the thermal design, HT-TH-1 has provided a comfortable environment for the satellite: the average temperature was about 25ºC in the past two years. It will be very constructive to study the temperature environment and the thermal design if a high-resolution imaging system is built on micro satellite platform. The telemetry data of temperature of solar panels and subsystem modules since lunched was analyzed in order to understand the main factors for the fluctuation. Finally, a conclusion of passive thermal design for camera is given.

Paper Details

Date Published: 16 June 2003
PDF: 8 pages
Proc. SPIE 4897, Multispectral and Hyperspectral Remote Sensing Instruments and Applications, (16 June 2003); doi: 10.1117/12.467423
Show Author Affiliations
Luming Li, Tsinghua Univ. (China)
Jun Wu, Tsinghua Univ. (China)
Long Hu, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 4897:
Multispectral and Hyperspectral Remote Sensing Instruments and Applications
Allen M. Larar; Qingxi Tong; Makoto Suzuki, Editor(s)

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