Constructing an observational model of the neutral atmospheric refraction delay from measured values of the astronomical refraction
文献类型：期刊论文
| 作者 | Mao Y(冒蔚)1; Li, B2; Yang L(杨磊)1; Tie QX(铁琼仙)1 ; Zhang HW(张捍卫)1,3; Mao W(冒蔚)
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| 刊名 | ASTRONOMICAL JOURNAL
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| 出版日期 | 2007-11 |
| 卷号 | 134期号:5页码:2054-2060 |
| 关键词 | astrometry atmospheric effects instrumentation : miscellaneous methods : data analysis |
| ISSN号 | 0004-6256 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Mao, W (reprint author), Chinese Acad Sci, Natl Astron Observ Yunnan Observ, Kunming 650011, Peoples R China. |
| 英文摘要 | Discussing the requirements for an accurate correction of the neutral atmospheric refraction delay for the Global Positioning System, our paper points out that the existing theoretical correction models and the old postprocessing methods cannot attain the anticipated accuracy because the atmospheric refraction index has not been directly determined precisely. It is necessary to adopt atmospheric refraction delay models to improve the correction accuracy. The models are dependent on the observing station and the observation azimuth. By the new method we propose in this paper, the observational data of astronomical refractions at different azimuths and different zenith distances are grouped according to azimuth and used to calculate the refractivity and mapping functions. As an example of the newmethod, we introduce the configuration of the Lower Latitude Meridian Circle and the measurement method of instantaneous astronomical refractions, and present the observational astronomical refraction model toward the east, south, west, and north of the Yunnan Observatory. We estimate that, without the use of any atmospheric distribution models, the correction accuracy of the zenith delay will be within 1 mm, the correction accuracy of the refraction delay at the lower elevation will be improved to a centimeter magnitude, and the cutoff elevation angle will be reduced to 5 degrees or less. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | TRACKING DATA ; GRADIENTS ; INTERFEROMETRY ; PREDICTION ; PROFILE ; SYSTEM ; LLMC |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/1538-3881/134/5/2054/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000250518400030 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6636]  |
| 专题 | 云南天文台_天体测量及应用研究组 |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China 2.Kunming University of Science and Technology, Kunming 650051, China 3.Xuzhou Normal University, Xuzhou 221116, China |
| 推荐引用方式 GB/T 7714 | Mao Y,Li, B,Yang L,et al. Constructing an observational model of the neutral atmospheric refraction delay from measured values of the astronomical refraction[J]. ASTRONOMICAL JOURNAL,2007,134(5):2054-2060. |
| APA | Mao Y,Li, B,Yang L,Tie QX,Zhang HW,&Mao W.(2007).Constructing an observational model of the neutral atmospheric refraction delay from measured values of the astronomical refraction.ASTRONOMICAL JOURNAL,134(5),2054-2060. |
| MLA | Mao Y,et al."Constructing an observational model of the neutral atmospheric refraction delay from measured values of the astronomical refraction".ASTRONOMICAL JOURNAL 134.5(2007):2054-2060. |
入库方式： OAI收割
来源：云南天文台
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