Performance Assessment of Multi-GNSS PPP Ambiguity Resolution with LEO-Augmentation
文献类型：期刊论文
| 作者 | Li, Qin4; Yao, Wanqiang4; Tu, Rui1,2,3; Du, Yanjun4; Liu, Mingyue1,3 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 15期号:12页码:19 |
| 关键词 | low Earth orbit satellite global navigation satellite system precise point positioning ambiguity resolution convergence speed |
| DOI | 10.3390/rs15122958 |
| 英文摘要 | The fast motion of low Earth orbit (LEO) satellites provides rapid geometric changes in a short time, which can accelerate the initialization of precise point positioning (PPP). The rapid convergence of ambiguity parameters is conducive to the rapid success of ambiguity fixing. This paper presents the performance of single- and four-system combined PPP Ambiguity Resolution (AR), enhanced with an ambiguity-float solution LEO. Two LEO constellations were designed: L was a typical polar orbit constellation, with a higher number of visible satellites at high latitudes than at low and middle latitudes; and M was designed to compensate for the lack of visible satellites at low and middle latitudes. The ground observation data of the LEO satellites at the MGEX stations were simulated. Because the global navigation satellite systems (GNSSs) were fully operational, the GNSS data were real observation data from the MGEX stations. Based on the daily observation datasets collected at 258 stations in the global MGEX observation network over three days (from 1 January to 3 January 2022), in addition to the LEO simulation data, we evaluated the positioning performance of LEO ambiguity-float solution-enhanced PPP ambiguity resolution and compared it with LEO-enhanced PPP. The L+M mixed constellation was able to reduce the time to first fix (TTFF) of the four-system combined PPP-AR to 5 min, and four LEO satellites were sufficient to achieve this. L+M mixed constellation was able to reduce the convergence time of the four-system combined PPP to 2 min. Unlike PPP-AR, PPP required more LEO satellites for augmentation to saturate. |
| WOS关键词 | GPS ; GLONASS |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:001016149200001 |
| 源URL | [http://210.72.145.45/handle/361003/14208]  |
| 专题 | 国家授时中心_导航与通信研究室 |
| 通讯作者 | Tu, Rui |
| 作者单位 | 1.Univ Chinese Acad Sci, Yu Quan Rd, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Key Lab Precis Nav & Timing Technol, Shu Yuan Rd, Xian 710600, Peoples R China 3.Chinese Acad Sci, Natl Time Serv Ctr, Shu Yuan Rd, Xian 710600, Peoples R China 4.Xian Univ Sci & Technol, Coll Geomat, Xian 710054, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Qin,Yao, Wanqiang,Tu, Rui,et al. Performance Assessment of Multi-GNSS PPP Ambiguity Resolution with LEO-Augmentation[J]. REMOTE SENSING,2023,15(12):19. |
| APA | Li, Qin,Yao, Wanqiang,Tu, Rui,Du, Yanjun,&Liu, Mingyue.(2023).Performance Assessment of Multi-GNSS PPP Ambiguity Resolution with LEO-Augmentation.REMOTE SENSING,15(12),19. |
| MLA | Li, Qin,et al."Performance Assessment of Multi-GNSS PPP Ambiguity Resolution with LEO-Augmentation".REMOTE SENSING 15.12(2023):19. |
入库方式： OAI收割
来源：国家授时中心
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