Improved astrometry of space debris with image restoration

In order to implement an observing strategy, image degradation that occurs during optical observation of space debris is ineluctable and has distinct characteris- tics. Image restoration is presented as a way to remove the influence of degradation in CCD images of space debris, based on assumed PSF...

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Bibliographic Details
Published in:Research in astronomy and astrophysics 2014-08, Vol.14 (8), p.992-1000
Main Authors: Sun, Rong-Yu, Zhao, Chang-Yin
Format: Article
Language:English
Subjects:
Astrometry
Astronomy
CCD图像
Degradation
Image restoration
Maximum entropy method
Space debris
Strategy
光学观测
图像复原
图像恢复
图像退化
天体测量
最大熵法
空间碎片
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Summary:In order to implement an observing strategy, image degradation that occurs during optical observation of space debris is ineluctable and has distinct characteris- tics. Image restoration is presented as a way to remove the influence of degradation in CCD images of space debris, based on assumed PSF models with the same F-WHM as images of the object. In the process of image restoration, the maximum entropy method is adopted. The results of reduction using observed raw CCD images indi- cate that the precision in estimating positions of objects is improved and the effects of degradation are reduced. Improving the astrometry of space debris using image restoration is effective and feasible.
ISSN:1674-4527
2397-6209
DOI:10.1088/1674-4527/14/8/009