| 关于大气分布模型 |
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| 引用本文： | 张捍卫,李彬华,杨磊,铁琼仙,冒蔚. 关于大气分布模型[J]. 天文研究与技术, 2005, 2(4): 278-284 |
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| 作者姓名： | 张捍卫 李彬华 杨磊 铁琼仙 冒蔚 |
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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(张捍卫，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(冒蔚) |
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| 摘 要： | 简述了大气垂直分布情况和高空探测方法,分析了目前只能采用球对称大气分布模型的原因;论证了随观测站、随方位而异的天文大气折射实测模型和折射延迟改正模型,已经包含了观测站上空大气实际分布的非球对称特性,不必再去寻找或建立随地势而异和随季节而变的大气分布模型,避免了大气分布模型选择不当的影响,从一个方面为提高天文大气折射改正精度和电磁波大气折射延迟改正精度提供了保证。
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| 关 键 词： | 大气分布模型 非球对称 大气折射 折射延迟 |
| 文章编号： | 1672-7673(2005)04-0278-07 |
| 修稿时间： | 2005-05-27 |
Atmospheric Distribution Model |
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| ZHANG Han-wei,LI Bin-hua,YANG Lei,TIE Qiong-xian,MAO Wei. Atmospheric Distribution Model[J]. Astronomical Research & Technology, 2005, 2(4): 278-284 |
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| Authors: | ZHANG Han-wei LI Bin-hua YANG Lei TIE Qiong-xian MAO Wei |
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| Affiliation: | ZHANG Han-wei~1,LI Bin-hua~2,YANG Lei~1,TIE Qiong-xian~1,MAO Wei~1 |
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| Abstract: | Atmospheric vertical distributions and high altitude surveying techniques are described briefly.The reason why the atmospheric spherically symmetric distribution models are only adopted at present is analyzed.It is demonstrated that astronomical refraction measured models varied with change in observing stations and observation directions already have characteristics of non-spherically symmetric distribution of the real atmosphere over the observing stations so that there is no need to find or build atmospheric distribution models varied with change in topography and seasons.With the measured models,influences of ill selection of atmospheric distribution models can be avoided.All these from one side will ensure success in improving accuracies of the astronomical refraction correction and the radio wave refraction delay correction. |
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| Keywords: | atmospheric distribution model non-spherical symmetry astronomical refraction refraction delay |
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