Assessment of ZTD Derived from COSMIC Occultation Data with ECWMF, Radiosondes, and GNSS
文献类型：期刊论文
| 作者 | Fu, Naifeng1; Jiang, Mingbo1,2; Li, Fenghui3; Guo, Peng4; Hou, Chunping3; Wu, Mengjie4; Wu, Jianming4,5; Wang, Zhipeng3; Kan, Liang3 |
| 刊名 | SENSORS
 |
| 出版日期 | 2022-07-01 |
| 卷号 | 22期号:14页码:15 |
| 关键词 | zenith tropospheric delays (ZTDs) COSMIC ECWMF GPS-ZTD |
| DOI | 10.3390/s22145209 |
| 英文摘要 | Global Navigation Satellite System (GNSS) signals generate slant tropospheric delays when they pass through the atmosphere, which is recognized as the main source of error in many spatial geodetic applications. The zenith tropospheric delay (ZTD) derived from radio occultation data is of great significance to atmospheric research and meteorology and needs to be assessed in the use of precision positioning. Based on the atmPrf, sonPrf, and echPrf data from the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) Data Analysis and Archiving Center (CDAAC) from 1 January to 31 December 2008 and 2012, we obtained the ZTDs of the radio occultation data (occZTD) and the corresponding radiosonde (sonZTD) and ECWMF data (echZTD). The ZTDs derived from ground-based global positioning system (GPS) observations from the International GNSS Service (IGS) were corrected to the lowest tangent point height of the matched radio occultation profile by the barometric height formula (gnsZTD). The statistical results show that the absolute values of the bias between occZTD and echZTD, sonZTD, or gnsZTD are less than 5 mm, and the standard deviations are approximately 20 mm or less, indicating that occZTD had significant accuracy in the GNSS positioning model even when the local spherical symmetry assumption error was introduced when the Abel inversion algorithm was used to obtain the refractive index profile of atmPrf. The effects of the horizontal/vertical matching resolution and the variation in the station height/latitude on the biases of occZTD and gnsZTD were analyzed. The results can be used to quantify the performance of radio occultation data for tropospheric delay error correction in dynamic high-precision positioning. |
| WOS关键词 | RADIO OCCULTATION ; REFINED DISCRETE ; GPS ; VALIDATION ; DELAYS |
| 资助项目 | National Science Foundation of China[U1831116] ; National Science Foundation of China[11903064] ; National Key RD Plan[2018YFC1406104] ; National Key RD Plan[2020YFA0713501] ; opening project of Shanghai Key Laboratory of Space Navigation and Positioning Techniques[KFKT_201906] |
| WOS研究方向 | Chemistry ; Engineering ; Instruments & Instrumentation |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000832348800001 |
| 资助机构 | National Science Foundation of China ; National Science Foundation of China ; National Key RD Plan ; National Key RD Plan ; opening project of Shanghai Key Laboratory of Space Navigation and Positioning Techniques ; opening project of Shanghai Key Laboratory of Space Navigation and Positioning Techniques ; National Science Foundation of China ; National Science Foundation of China ; National Key RD Plan ; National Key RD Plan ; opening project of Shanghai Key Laboratory of Space Navigation and Positioning Techniques ; opening project of Shanghai Key Laboratory of Space Navigation and Positioning Techniques ; National Science Foundation of China ; National Science Foundation of China ; National Key RD Plan ; National Key RD Plan ; opening project of Shanghai Key Laboratory of Space Navigation and Positioning Techniques ; opening project of Shanghai Key Laboratory of Space Navigation and Positioning Techniques ; National Science Foundation of China ; National Science Foundation of China ; National Key RD Plan ; National Key RD Plan ; opening project of Shanghai Key Laboratory of Space Navigation and Positioning Techniques ; opening project of Shanghai Key Laboratory of Space Navigation and Positioning Techniques |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/87897]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Li, Fenghui |
| 作者单位 | 1.Tianjin Univ, Sch Marine Sci & Technol, Tianjin 300072, Peoples R China 2.Beijing Inst Appl Meteorol, Beijing 100029, Peoples R China 3.Tianjin Univ, Sch Elect & Informat Engn, Tianjin 300072, Peoples R China 4.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fu, Naifeng,Jiang, Mingbo,Li, Fenghui,et al. Assessment of ZTD Derived from COSMIC Occultation Data with ECWMF, Radiosondes, and GNSS[J]. SENSORS,2022,22(14):15. |
| APA | Fu, Naifeng.,Jiang, Mingbo.,Li, Fenghui.,Guo, Peng.,Hou, Chunping.,...&Kan, Liang.(2022).Assessment of ZTD Derived from COSMIC Occultation Data with ECWMF, Radiosondes, and GNSS.SENSORS,22(14),15. |
| MLA | Fu, Naifeng,et al."Assessment of ZTD Derived from COSMIC Occultation Data with ECWMF, Radiosondes, and GNSS".SENSORS 22.14(2022):15. |
入库方式： OAI收割
来源：国家天文台
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