PMO OpenIR  > 空间目标与碎片观测研究基地
Image Restoration Based on Statistic PSF Modeling for Improving the Astrometry of Space Debris
Sun, Rongyu; Jia, Peng
2017
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
卷号129期号:974页码:044502-
摘要Space debris is a special kind of fast-moving, near-Earth objects, and it is also considered to be an interesting topic in time-domain astronomy. Optical survey is the main technique for observing space debris, which contributes much to the studies of space environment. However, due to the motion of registered objects, image degradation is critical in optical space debris observations, as it affects the efficiency of data reduction and lowers the precision of astrometry. Therefore, the image restoration in the form of deconvolution can be applied to improve the data quality and reduction accuracy. To promote the image processing and optimize the reduction, the image degradation across the field of view is modeled statistically with principal component analysis and the efficient mean point-spread function (PSF) is derived from raw images, which is further used in the image restoration. To test the efficiency and reliability, trial observations were made for both low-Earth orbital and high-Earth orbital objects. The positions of all targets were measured using our novel approach and compared with the reference positions. The performance of image restoration employing our estimated PSF was compared with several competitive approaches. The proposed image restoration outperformed the others so that the influence of image degradation was distinctly reduced, which resulted in a higher signal-to-noise ratio and more precise astrometric measurements.
语种英语
文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/17360
专题空间目标与碎片观测研究基地
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GB/T 7714
Sun, Rongyu,Jia, Peng. Image Restoration Based on Statistic PSF Modeling for Improving the Astrometry of Space Debris[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2017,129(974):044502-.
APA Sun, Rongyu,&Jia, Peng.(2017).Image Restoration Based on Statistic PSF Modeling for Improving the Astrometry of Space Debris.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,129(974),044502-.
MLA Sun, Rongyu,et al."Image Restoration Based on Statistic PSF Modeling for Improving the Astrometry of Space Debris".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 129.974(2017):044502-.
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