A Possible Means of Improving the Accuracy of Refraction Delay Correction of Neutral Atmosphere
文献类型：期刊论文
| 作者 | Wei Mao2; Hanwei Zhang2; Binhua Li1; Lei Yang2; Qiongxian Tie2 |
| 刊名 | Chinese Astronomy and Astrophysics
 |
| 出版日期 | 2007 |
| 卷号 | 31期号:2页码:211 |
| ISSN号 | 0275-1062 |
| 英文摘要 | The space geodetic technology requires an accurate model of correction of refraction delay by the neutral atmosphere that varies from one observing station to another, and from one azimuth to the next. It is pointed out that under the present condition the astronomical refraction can not yet be directly determined, any correction model because of its high dependence on the assumed atmospheric distribution, is incapable of achieving the required accuracy or of improving the cut-off altitude. In this paper, based on the special properties of the lower latitude meridian circle at Yunnan Observatory and our experience of determining atmospheric refraction therewith, a new method is proposed for improving the accuracy of refraction delay correction. Namely, the measured data of astronomical refraction of an observing station from near zenith to low altitudes in different azimuths are used to evaluate the refractivities and the parameters of the mapping functions, thereby establishing a model of atmospheric refraction delay correction that varies with the observing station and the azimuth. Since it is unnecessary for the new method to adopt any atmospheric distribution model, application of this new method will improve correction accuracy of refraction delay to better than 1mm at zenith and to centimeters at low altitudes, and improve the cut-off altitude to below 5 degrees. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/44654]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.中国科学院信息工程研究所 2.中国科学院国家天文台 |
| 推荐引用方式 GB/T 7714 | Wei Mao,Hanwei Zhang,Binhua Li,et al. A Possible Means of Improving the Accuracy of Refraction Delay Correction of Neutral Atmosphere[J]. Chinese Astronomy and Astrophysics,2007,31(2):211. |
| APA | Wei Mao,Hanwei Zhang,Binhua Li,Lei Yang,&Qiongxian Tie.(2007).A Possible Means of Improving the Accuracy of Refraction Delay Correction of Neutral Atmosphere.Chinese Astronomy and Astrophysics,31(2),211. |
| MLA | Wei Mao,et al."A Possible Means of Improving the Accuracy of Refraction Delay Correction of Neutral Atmosphere".Chinese Astronomy and Astrophysics 31.2(2007):211. |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。