光学 精密工程, 2009, 17 (1): 92, 网络出版: 2009-10-09   

捆绑式望远镜图像信噪比测量及分析

Measurement and analysis of image SNR in binding style telescope
作者单位
1 中国科学院 长春光学精密机械与物理研究所,吉林 长春 130033
2 中国科学院 研究生院,北京 100039
摘要
为了满足空间暗弱目标探测对大口径、短焦距望远镜系统的要求,克服普通望远镜随着口径的增加焦距变长、视场变小的不足,提出了将多镜筒捆绑在一起对同一空域进行观测,通过软件的方式对采集的图像进行叠加来抑制背景随机噪声、提高图像的信噪比和系统的整体探测能力的设想。为了对上述设想进行验证,利用4台110 nm望远镜搭建了捆绑式望远镜系统实验平台,通过实际观测及事后处理验证了该设想并给出分析结果。实验结果表明:图像信噪比平均提高1.58倍,探测能力近似提高0.5个星等,证实了该技术在保持对应焦距不缩小的前提下,可以提高系统的探测能力。
Abstract
To meet the needs of detection of space faint objects for a telescope with large aperture and short focal,a binding drawtube telescope scheme to detect space object is presented to overcome the shortcomings that focal length grows and field of view shrinks with the increasing of aperture size in traditional telescope for space detection.The software methods are used to stack collected images to restrain background random noises and to improve image Signal to Noise Ratio(SNR) and the detecting ability of the whole system. In order to validate the above assumption,four stages of 110 mm telescopes is binded to establish a experimental platform.Through practical observation and post process, the assumption is validated and the analysis result is presented. Experimental results indicate that the image SNR is increased by 1.58 times and the detecting ability is increased by 0.5 magnitude as compared with those of traditional telescope. It is validated that the detecting ability can be improved when relevant focus length is maintained from reducing.

王鸣浩, 陈涛, 王建立, 刘欣悦. 捆绑式望远镜图像信噪比测量及分析[J]. 光学 精密工程, 2009, 17(1): 92. WANG Ming-hao, CHEN Tao, WANG Jian-li, LIU Xin-yue. Measurement and analysis of image SNR in binding style telescope[J]. Optics and Precision Engineering, 2009, 17(1): 92.

本文已被 3 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!