| Constructing an observational model of the neutral atmospheric refraction delay from measured values of the astronomical refraction | |
Mao W(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 (reprint author), Chinese Acad Sci, Natl Astron Observ Yunnan Observ, Kunming 650011, Peoples R China.
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| 发表期刊 | ASTRONOMICAL JOURNAL
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| 2007-11 | |
| 卷号 | 134期号:5页码:2054-2060 |
| DOI | 10.1086/522943 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Astrometry Atmospheric Effects Instrumentation : Miscellaneous Methods : Data Analysis |
| 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. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-6256 |
| URL | 查看原文 |
| 归档日期 | 2008-04-02 |
| WOS记录号 | WOS:000250518400030 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | TRACKING DATA ; GRADIENTS ; INTERFEROMETRY ; PREDICTION ; PROFILE ; SYSTEM ; LLMC |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/6636 |
| 专题 | 天体测量技术及应用研究组 |
| 通讯作者 | Mao, W (reprint author), Chinese Acad Sci, Natl Astron Observ Yunnan Observ, Kunming 650011, Peoples R China. |
| 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 |
| 第一作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 GB/T 7714 | Mao W,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 W,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 W,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. |
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| Constructing an Obse（133KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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