摘要
天文卫星获取的数据需要经过一系列操作生成可以发布给科学用户的数据产品,数据预处理是其中比较重要的环节,它是数据发布的基础。以硬X射线调制望远镜卫星的中能X射线望远镜及天宫二号上伽玛暴偏振探测仪为例,详细介绍了数据的预处理步骤和方法。提出了一套数据预处理的步骤,并给出数据解析的策略和时间计算方法等,这对中国天文卫星数据处理系统的研制具有参考意义。
The data obtained from astronomical satellite is telemetered to ground and converted into high products （ such as energy spectra and light curves） for further analysis. In one of these steps, data preprocessing is a very important step. This work will take the Media Energy X-ray Telescope （ME） on the Hard X-ray Modulation Telescope satellite and the Gamma-ray Burst Polarimeter-POLAR on Tiangong-2 （TG-2） as examples to introduce the method of data preprocessing. In this work, we present a standard data flow for astronomical satellite, and also introduce how to use configure file to decode data and how to calculate the local time of the payload and GPS time. This is helpful to establish data preprocessing system for other astronomical satellites.
作者
赵海升
葛明玉
李正恒
聂建胤
宋黎明
Zhao Haisheng Ge Mingyu Li Zhengheng Nie Jiannyin Song Liming(Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China Key Laboratory of Particle Astrophysics, Chinese Academy of Sciences, Beijing 100049, China)
出处
《天文研究与技术》
CSCD
2017年第3期376-381,共6页
Astronomical Research & Technology
基金
国家自然科学基金(11503029)
中国科学院空间战略性科学先导科技专项(XDA04010300)资助
关键词
预处理
卫星数据
数据解包
时间计算
Data preprocessing
Satellite data
Packet decoding
Time calculation
