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文摘
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简述了天文大气折射和电磁波中性大气折射延迟的成因,以及不同观测站、不同方位的折射值存在差异的事实;根据测定瞬时天文大气折射、建立本地实测模型的观测原理和要求,分析了长期以来不能直接测定天文大气折射的几个主要障碍,介绍了现已具备的排除这些障碍的必要条件,为建立天文大气折射实测模型,和随观测站、随方位而异的电磁波折射延迟改正模型提供了保证. |
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其他语种文摘
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The research history of the astronomical refraction and the cause of formation of the radio wave atmospheric refractive delay are reviewed, and the fact that there are differences in measured values of the refraction in different directions at different stations are described briefly. Based on the observation principle of measuring the angular refraction and modeling the local refraction, several major obstacles resulting in no direct t for the refraction since always are analyzed, necessary conditions now possessed to remove these obstacles are presented. These can ensure success in building the astronomical refraction model measured and the radio wave refractive delay corrective models varied with change in observing stations and observational directions. |
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来源
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天文研究与技术
,2005,2(4):240-245 【核心库】
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关键词
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观测原理
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主要障碍
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直接测定
;
可行性
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地址
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1.
中国科学院国家天文台云南天文台, 云南, 昆明, 650011
2.
昆明理工大学, 云南, 昆明, 650051
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1672-7673 |
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学科
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天文学 |
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文献收藏号
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CSCD:2129431
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