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Proceedings Paper

An adaptive window motion blurred star restoration based on energy equalization
Author(s): Fengqi Jiang; Xin Song; Zhenguo Yan
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Paper Abstract

The accuracy of star centroid extraction and identified star number is both crucial features for star sensor precision. Motion blur and fracture are introduced when star sensor works under high dynamic conditions, which affect the accuracy of star centroid extraction and further reduce the precision of the star sensor. To improve the precision of star sensor, this paper proposes an adaptive window star map restoration method based on energy equalization. The local degradation function is estimated for the star point energy distribution region, and dynamic star map simulation and restoration are performed. The simulation process is divided into three steps. Firstly, establish the motion trajectory of the star point centroid in the detector plane during the exposure time, according to the trailing trajectory size and direction adaptive selection window. Secondly, accumulate the star image point energy in the adaptive window to achieve star point recovery, and finally the recovery effect was evaluated by star extraction results.

Paper Details

Date Published: 12 March 2020
PDF: 8 pages
Proc. SPIE 11438, 2019 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology, 114380H (12 March 2020); doi: 10.1117/12.2543281
Show Author Affiliations
Fengqi Jiang, National Univ. of Defense Technology (China)
Xin Song, National Univ. of Defense Technology (China)
Zhenguo Yan, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 11438:
2019 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology
Guohai Situ; Xun Cao; Wolfgang Osten, Editor(s)

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