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Study on effect of polarization for improving signal noise ratio of stellar objects in daytime
Zhang Rui-Jin; Xian Hao; WEi Kai; Rao Chang-Hui
Volume8191
2011
Language英语
Indexed ByEi
Subtype会议论文
AbstractSky background is one of the main noise sources in astronomy observation. Most of the telescopes work well in nighttime with low sky background, but do not work anymore in daytime with strong sky background. Polarization filtering is a critical method that can be used to suppress the sky background and improve the signal noise ratio (SNR) of object signal. Experimental device with polarization filtering technology was constructed in 1.8m adaptive optics (AO) telescope of Yunnan observatory, to identify the effect of polarization filtering technology. Experimental results indicate that the SNR (ratio of object energy to noise's mean square deviation) of stellar objects could be improved to 1 to 3 times at different observation conditions, which is significative to star detection in daytime. Experimental results also indicate that polarization filtering technology is effective and important in observing different kinds of stellar objects in daytime condition. Furthermore, it also makes it possible to apply our AO system in daytime in future.; Sky background is one of the main noise sources in astronomy observation. Most of the telescopes work well in nighttime with low sky background, but do not work anymore in daytime with strong sky background. Polarization filtering is a critical method that can be used to suppress the sky background and improve the signal noise ratio (SNR) of object signal. Experimental device with polarization filtering technology was constructed in 1.8m adaptive optics (AO) telescope of Yunnan observatory, to identify the effect of polarization filtering technology. Experimental results indicate that the SNR (ratio of object energy to noise's mean square deviation) of stellar objects could be improved to 1 to 3 times at different observation conditions, which is significative to star detection in daytime. Experimental results also indicate that polarization filtering technology is effective and important in observing different kinds of stellar objects in daytime condition. Furthermore, it also makes it possible to apply our AO system in daytime in future.
Conference NameProceedings of SPIE - The International Society for Optical Engineering, v 8191, 2011, International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies
Conference Date2011
Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/7763
Collection自适应光学技术研究室(八室)
Corresponding AuthorZhang Rui-Jin
Affiliation中国科学院光电技术研究所
Recommended Citation
GB/T 7714
Zhang Rui-Jin,Xian Hao,WEi Kai,et al. Study on effect of polarization for improving signal noise ratio of stellar objects in daytime[C],2011.
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