摘要
空间碎片的持续增加已严重威胁人类航天活动的安全。为了规避空间碎片对在轨航天器的威胁,需要通过观测获取空间碎片与航天器的位置等信息进行碰撞预警,为航天器采取规避措施提供参考。地基光电望远镜在高轨空间碎片观测方面有绝对优势,根据探测信噪比公式,计算望远镜最小可探测空间碎片的尺寸,并通过观测实验对尺寸计算公式进行验证,分析设备探测能力的影响因素,对两种观测模式下设备探测地球静止轨道空间碎片的能力进行分析,得到口径和曝光时间对探测能力影响的定量关系,可以为观测空间碎片设备建设等提供参考。
The number of space debris is growing in recently years, and it poses grave threats to the security of spacecrafts. In order to manage the risk, it is of vital importance to obtain the position information of space debris and spacecrafts by observation and therefore provide pre-warning service. The Ground-Based Electro-Optic Telescope has absolute advantages in terms of observing the GEO region. In this paper, we get the minimum detectable size of debris by using simulated formula based on signal to noise ratio theory and then use observational tests to verify the computational formula. After analyzing the influencing factors of detection ability and comparing its debris detection ability of the GEO region in two observation modes, we get the quantitative relation between aperture size and exposure time. This paper can provide some reference to devices designed for space debris detection.
作者
胡静静
刘静
崔双星
程昊文
Hu Jingjing Liu Jing Cui Shuangxing Cheng Haowen(National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China University of Chinese Academy of Sciences, Beijing 100049, China)
出处
《天文研究与技术》
CSCD
2017年第1期39-44,共6页
Astronomical Research & Technology
基金
国家自然科学基金(11503044)资助
