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Proceedings Paper

An advanced scanning method for space-borne hyper-spectral imaging system
Author(s): Yue-ming Wang; Jun-Wei Lang; Jian-Yu Wang; Zi-Qing Jiang
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Paper Abstract

Space-borne hyper-spectral imagery is an important means for the studies and applications of earth science. High cost efficiency could be acquired by optimized system design. In this paper, an advanced scanning method is proposed, which contributes to implement both high temporal and spatial resolution imaging system. Revisit frequency and effective working time of space-borne hyper-spectral imagers could be greatly improved by adopting two-axis scanning system if spatial resolution and radiometric accuracy are not harshly demanded. In order to avoid the quality degradation caused by image rotation, an idea of two-axis rotation has been presented based on the analysis and simulation of two-dimensional scanning motion path and features. Further improvement of the imagers' detection ability under the conditions of small solar altitude angle and low surface reflectance can be realized by the Ground Motion Compensation on pitch axis. The structure and control performance are also described. An intelligent integration technology of two-dimensional scanning and image motion compensation is elaborated in this paper. With this technology, sun-synchronous hyper-spectral imagers are able to pay quick visit to hot spots, acquiring both high spatial and temporal resolution hyper-spectral images, which enables rapid response of emergencies. The result has reference value for developing operational space-borne hyper-spectral imagers.

Paper Details

Date Published: 15 August 2011
PDF: 11 pages
Proc. SPIE 8196, International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, 819626 (15 August 2011); doi: 10.1117/12.902424
Show Author Affiliations
Yue-ming Wang, Shanghai Institute of Technical Physics (China)
Jun-Wei Lang, Shanghai Institute of Technical Physics (China)
Graduate School of CAS (China)
Jian-Yu Wang, Shanghai Institute of Technical Physics (China)
Zi-Qing Jiang, Shanghai Institute of Technical Physics (China)

Published in SPIE Proceedings Vol. 8196:
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications
John C. Zarnecki; Carl A. Nardell; Rong Shu; Jianfeng Yang; Yunhua Zhang, Editor(s)

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