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Proceedings Paper • Open Access

Experimental demonstration of 1.5Hz passive isolation system for precision optical payloads
Author(s): Xin Guan; Guang-yuan Wang; Dong-jing Cao; Shao-fan Tang; Xiang Chen; Lu Liang; Gang-tie Zheng

Paper Abstract

The ground resolution of remote sensing satellite has been raised from hundreds of meters to less than one meter in recent few decades. As a result, the precision optical payload becomes more and more sensitive to structure vibrations of satellite buses. Although these vibrations generally have extremely low magnitude, they can result in significant image quality degradation to an optical payload. The suggestion of using vibration isolators to isolate payload from the satellite bus has been put forward in 1980s’[1]. Recently, WorldView-2 achieved its perfect image quality via using a set of low frequency isolators[2]. Recently, some of the optical payload manufacturers begin to provide vibration isolators as standard parts together with their main products . During the prototype testing of an earth resource satellite, the image of the optical payload was found to jitter for 5~10 pixels due to disturbances transmitted from the satellite bus structure. Test results indicated that the acceleration level of the vibration was of mG magnitude. To solve the problem, a highly sensitive vibration isolation system was developed to reduce the transmission of disturbances. Integrated isolation performance tests showed that the image jitter can be decreased to below 0.3 pixels.

Paper Details

Date Published: 20 November 2017
PDF: 7 pages
Proc. SPIE 10565, International Conference on Space Optics — ICSO 2010, 105651Q (20 November 2017); doi: 10.1117/12.2309112
Show Author Affiliations
Xin Guan, Tsinghua Univ. (China)
Guang-yuan Wang, Tsinghua Univ. (China)
Dong-jing Cao, Beijing Institute of Space Mechanics and Electricity (China)
Shao-fan Tang, Beijing Institute of Space Mechanics and Electricity (China)
Xiang Chen, Beijing Institute of Space Mechanics and Electricity (China)
Lu Liang, Tsinghua Univ. (China)
Gang-tie Zheng, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 10565:
International Conference on Space Optics — ICSO 2010
Errico Armandillo; Bruno Cugny; Nikos Karafolas, Editor(s)

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