| Integrity Monitoring of PPP-RTK Positioning; Part II: LEO Augmentation | |
| Wang, Kan1,2; El-Mowafy, Ahmed3; Wang, Wei1,2; Yang, Long4; Yang, Xuhai1,2 | |
| 2022-04-01 | |
| 发表期刊 | REMOTE SENSING
 |
| 卷号 | 14期号:7页码:22 |
| 摘要 | Low Earth orbit (LEO) satellites benefit future ground-based positioning with their high number, strong signal strength and high speed. The rapid geometry change with the LEO augmentation offers acceleration of the convergence of the precision point positioning (PPP) solution. This contribution discusses the influences of the LEO augmentation on the precise point positioning-real-time kinematic (PPP-RTK) positioning and its integrity monitoring. Using 1 Hz simulated data around Beijing for global positioning system (GPS)/Galileo/Beidou navigation satellite system (BDS)-3 and the tested LEO constellation with 150 satellites on L1/L5, it was found that the convergence of the formal horizontal precision can be significantly shortened in the ambiguity-float case, especially for the single-constellation scenarios with low precision of the interpolated ionospheric delays. The LEO augmentation also improves the efficiency of the user ambiguity resolution and the formal horizontal precision with the ambiguities fixed. Using the integrity monitoring (IM) procedure introduced in the first part of this series of papers, the ambiguity-float horizontal protection levels (HPLs) are sharply reduced in various tested scenarios, with an improvement of more than 60% from 5 to 30 min after the processing start. The ambiguity-fixed HPLs can generally be improved by 10% to 60% with the LEO augmentation, depending on the global navigation satellite system (GNSS) constellations used and the precision of the ionospheric interpolation. |
| 关键词 | integrity monitoring PPP-RTK LEO GNSS L5 |
| 资助者 | National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; CAS "Light ofWest China" Program ; CAS "Light ofWest China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; CAS "Light ofWest China" Program ; CAS "Light ofWest China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; CAS "Light ofWest China" Program ; CAS "Light ofWest China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; CAS "Light ofWest China" Program ; CAS "Light ofWest China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council |
| DOI | 10.3390/rs14071599 |
| 关键词[WOS] | GNSS ; SATELLITES ; SERVICE |
| 语种 | 英语 |
| 资助项目 | National Time Service Center, Chinese Academy of Sciences (CAS)[E167SC14] ; CAS "Light ofWest China" Program[XAB2018YDYL01] ; National Natural Science Foundation of China[12073034] ; Australian Research Council[DP 190102444] |
| 资助者 | National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; CAS "Light ofWest China" Program ; CAS "Light ofWest China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; CAS "Light ofWest China" Program ; CAS "Light ofWest China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; CAS "Light ofWest China" Program ; CAS "Light ofWest China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council ; National Time Service Center, Chinese Academy of Sciences (CAS) ; National Time Service Center, Chinese Academy of Sciences (CAS) ; CAS "Light ofWest China" Program ; CAS "Light ofWest China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Australian Research Council ; Australian Research Council |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS记录号 | WOS:000780716200001 |
| 出版者 | MDPI |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.72.145.45/handle/361003/13830 |
| 专题 | 时间频率测量与控制研究室 |
| 通讯作者 | Wang, Kan |
| 作者单位 | 1.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Curtin Univ, Sch Earth & Planetary Sci, Perth, WA 6845, Australia 4.Beijing Future Nav Technol Co Ltd, Beijing 100094, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Kan,El-Mowafy, Ahmed,Wang, Wei,et al. Integrity Monitoring of PPP-RTK Positioning; Part II: LEO Augmentation[J]. REMOTE SENSING,2022,14(7):22. |
| APA | Wang, Kan,El-Mowafy, Ahmed,Wang, Wei,Yang, Long,&Yang, Xuhai.(2022).Integrity Monitoring of PPP-RTK Positioning; Part II: LEO Augmentation.REMOTE SENSING,14(7),22. |
| MLA | Wang, Kan,et al."Integrity Monitoring of PPP-RTK Positioning; Part II: LEO Augmentation".REMOTE SENSING 14.7(2022):22. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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