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Proceedings Paper

The design of image stabilization control system
Author(s): Zhe Lin; Chunnan Wu; Fei Yu; Xiaojun Kang
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Paper Abstract

For high resolution satellite remote sensing cameras, the line of sight (LOS) moving during the image exposure period will cause the modulation transfer function (MTF) degradation and image blurring. Image stabilization component is used to improve image quality by actively removing the apparent motion induced by vibration, tracking error and attitude instability. In this paper, the image stabilization component is considered as a kind of closed loop servo control system, and the image stabilization effect is converted into servo control performance for research. Firstly, the image stabilization servo loop scheme and transfer function model are constructed and the LOS jitter is considered as the output of a stochastic system derived by white-Gaussian noise. Based on the proposed model, the demand boundary of jitter rejection function is described, and the design criterion to be satisfied is obtained according to the requirement of image stabilization performance. And then, a discrete Kalman estimation algorithm is introduced into image stabilization servo loop to filter out the noise caused by pixel-shift sensor (PSS) and compensate for the delay due to the PSS measurement. Based on the given design criterion, the control law is designed by using the output of Kalman filter. The computer simulation is achieved to show that the proposed control strategy can significantly improve the image stabilization performance.

Paper Details

Date Published: 19 November 2012
PDF: 8 pages
Proc. SPIE 8542, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI, 85420R (19 November 2012); doi: 10.1117/12.974415
Show Author Affiliations
Zhe Lin, Beijing Institute of Space Mechanics and Electricity (China)
Chunnan Wu, Beijing Institute of Space Mechanics and Electricity (China)
Fei Yu, Beijing Institute of Space Mechanics and Electricity (China)
Xiaojun Kang, Beijing Institute of Space Mechanics and Electricity (China)


Published in SPIE Proceedings Vol. 8542:
Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI
Gary W. Kamerman; Ove Steinvall; Gary J. Bishop; John Gonglewski; Mark T. Gruneisen; Miloslav Dusek; John G. Rarity; Keith L. Lewis; Richard C. Hollins; Thomas J. Merlet, Editor(s)

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