| 测定天文大气折射和建立电磁波折射延迟实测模型(Ⅰ)-观测原理和可行性 |
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| 引用本文： | 冒蔚,李彬华,杨磊,铁琼仙,张捍卫.测定天文大气折射和建立电磁波折射延迟实测模型(Ⅰ)-观测原理和可行性[J].天文研究与技术,2005,2(4):240-245. |
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| 作者姓名： | 冒蔚 李彬华 杨磊 铁琼仙 张捍卫 |
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| 作者单位： | 中国科学院国家天文台云南天文台 云南昆明650011
(冒蔚，杨磊，铁琼仙)，昆明理工大学 云南昆明650051
(李彬华)，中国科学院国家天文台云南天文台 云南昆明650011(张捍卫) |
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| 摘 要： | 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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| 关 键 词： | 观测原理 主要障碍 直接测定 可行性 |
| 文章编号： | 1672-7673(2005)04-0240-06 |
| 修稿时间： | 2005年5月27日 |
Determining the Astronomical Refraction and Building the Radio Wave Refractive Delay Model Measured(Ⅰ)-Observation Principle and Feasibility |
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| MAO Wei,LI Bin-hua,YANG Lei,TIE Qiong-xian,ZHANG Han-wei.Determining the Astronomical Refraction and Building the Radio Wave Refractive Delay Model Measured(Ⅰ)-Observation Principle and Feasibility[J].Astronomical Research & Technology,2005,2(4):240-245. |
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| Authors: | MAO Wei LI Bin-hua YANG Lei TIE Qiong-xian ZHANG Han-wei |
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| Institution: | MAO Wei~1,LI Bin-hua~2,YANG Lei~1,TIE Qiong-xian~1,ZHANG Han-wei~1 |
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| Abstract: | 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 measurement 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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| Keywords: | observation principle major obstacles direct measurement feasibility |
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