| 中国频谱射电日像仪FITS-IDI文件格式研究 |
| |
| 引用本文： | 梅盈,刘东浩,王锋,邓辉,戴伟,季凯帆. 中国频谱射电日像仪FITS-IDI文件格式研究[J]. 天文研究与技术, 2014, 0(4): 388-395 |
| |
| 作者姓名： | 梅盈 刘东浩 王锋 邓辉 戴伟 季凯帆 |
| |
| 作者单位： | 昆明理工大学云南省计算机技术应用重点实验室;中国科学院国家天文台;中国科学院云南天文台; |
| |
| 基金项目： | 中国科学院-国家自然科学基金委员会天文联合基金重点项目(U1231205);国家自然科学基金(11263004,11203011,11163004,11103005);云南省应用基础基金重点项目(2013FA013,2013FA032,2013FZ018)资助 |
| |
| 摘 要： | 我国新一代中国频谱射电日像仪（Chinese Spectral Radio Heliograph,CSRH）原始观测数据采用自定义格式,在进行后续处理与共享使用时必须转换相应的格式.在分析FITS-IDI（FITS Interferometry Data Interchange）格式的基础上,结合CSRH的实际观测模式与数据产出方式,定义与设计了符合项目情况的FITS-IDI格式及字段,并对FITS-IDI文件中若干字段的值如何获取、计算进行了深入讨论.根据定义生成的FITS-IDI文件已成功导入CASA软件,并可以进行后续处理.经过对CASA测量集文件的核实,证明了数据生成的正确性.本研究有效地推进了CSRH的建设工作,也对其他射电干涉阵数据存储有一定的参考价值.
|
| 关 键 词： | 中国频谱射电日像仪 FITS-IDI 数据存储 |
A Study of the FITS-IDI Format for the Chinese Spectral Radio Heliograph |
| |
| Affiliation: | Mei Ying , Liu Donghao, Wang Feng, Deng Hui , Dai Wei, Ji Kaifan ( 1. Key Laboratory of Applications of Computer Technologies of the Yunnan Province, University of Science and Technology of Kunming Kunming 650500, China; 2. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China; 3. Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China) |
| |
| Abstract: | Raw data observed with the Chinese Spectral Radio Heliograph （CSRH） will be recorded in a self-defined format. For convenient distribution and use it is necessary to convert CSRH data flies to be of other standard formats such as the FITS-IDI. After an in-depth analysis of the FITS-IDI data format, we present a proposal of mandatory and optional FITS-IDI fields for the CSRH. We also discuss calculation equations of values of several data fields, including the UU, VV, and WW. A FITS-IDI data file converted from a raw-data file has been input into the CASA software package Measurement Sets （MS）. The generating and , successfully resulting in a CASA file of integrated subsequent processing of the CASA file demonstrate the correctness of the proposed CSRH FITS-IDI format. Our study could effectively advance the CSRH project and provide useful references for further research of data storage for other astronomical instruments. |
| |
| Keywords: | Chinese Spectral Radio Heliograph FITS-IDI Data storage |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
