Investigating the Global Performance of the BDS-2 and BDS-3 Joint Real-Time Undifferenced and Uncombined Precise Point Positioning Using RTS Products from Different Analysis Centers.
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| Title: | Investigating the Global Performance of the BDS-2 and BDS-3 Joint Real-Time Undifferenced and Uncombined Precise Point Positioning Using RTS Products from Different Analysis Centers. |
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| Authors: | Wang, Ahao1 (AUTHOR) ahao_wang@cumtb.edu.cn, Zhang, Yize2 (AUTHOR) junping@shao.ac.cn, Chen, Junping2,3 (AUTHOR), Wang, Hu4 (AUTHOR) wanghu@casm.ac.cn, Luo, Tianning1 (AUTHOR) 2110200215@student.cumtb.edu.cn, Gong, Mingyou1 (AUTHOR) 2110200114@student.cumtb.edu.cn, Liu, Quanpeng1 (AUTHOR) 2110200315@student.cumtb.edu.cn |
| Source: | Remote Sensing. Mar2024, Vol. 16 Issue 5, p788. 20p. |
| Subjects: | Beidou satellite navigation system, Geosynchronous orbits, Global Positioning System, Orbits (Astronomy), Orbit determination |
| Abstract: | Compared to the traditional ionospheric-free (IF) precise point positioning (PPP) model, the undifferenced and uncombined (UU) PPP has the advantages of lower observation noise and the ability to obtain ionospheric information. Thanks to the IGS (International GNSS Service), real-time service (RTS) can provide RT vertical total electron content (VTEC) products, and an enhanced RT UU-PPP based on the RT-VTEC constraints can be achieved. The global performance of the BeiDou Navigation Satellite System-2 (BDS-2) and BDS-3 joint RT UU-PPP using different RTS products was investigated. There is not much difference in the RTS orbit accuracy of medium earth orbit (MEO) satellites among all analysis centers (ACs), and the optimal orbit accuracy is better than 5, 9, and 7 cm in the radial, along-track, and cross-track directions, respectively. The orbit accuracy of inclined geosynchronous orbit (IGSO) satellites is worse than that of MEO satellites. Except for CAS of 0.46 ns, the RTS clock accuracy of MEO satellites for other ACs achieves 0.2–0.27 ns, and the corresponding accuracy is about 0.4 ns for IGSO satellites. In static positioning, due to the limited accuracy of RT-VTEC, the convergence time of the enhanced RT UU-PPP is longer than that of RT IF-PPP for most ACs and can be better than 25 and 20 min in the horizontal and vertical components, respectively. After convergence, the 3D positioning accuracy of the static RT UU-PPP is improved by no more than 8.7%, and the optimal horizontal and vertical positioning accuracy reaches 3.5 and 7.0 cm, respectively. As for the kinematic mode with poor convergence performance, with the introduction of RT-VTEC constraints, the convergence time of RT UU-PPP can be slightly shorter and reaches about 55 and 60 min in the horizontal and vertical components, respectively. Both the horizontal and vertical positioning accuracies of the kinematic RT UU-PPP can be improved and achieve around 7.5 and 10 cm, respectively. [ABSTRACT FROM AUTHOR] |
| Copyright of Remote Sensing is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 175986639 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Investigating the Global Performance of the BDS-2 and BDS-3 Joint Real-Time Undifferenced and Uncombined Precise Point Positioning Using RTS Products from Different Analysis Centers. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wang%2C+Ahao%22">Wang, Ahao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ahao_wang@cumtb.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yize%22">Zhang, Yize</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> junping@shao.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Junping%22">Chen, Junping</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Hu%22">Wang, Hu</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> wanghu@casm.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Luo%2C+Tianning%22">Luo, Tianning</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 2110200215@student.cumtb.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Gong%2C+Mingyou%22">Gong, Mingyou</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 2110200114@student.cumtb.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Quanpeng%22">Liu, Quanpeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 2110200315@student.cumtb.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Remote+Sensing%22">Remote Sensing</searchLink>. Mar2024, Vol. 16 Issue 5, p788. 20p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Beidou+satellite+navigation+system%22">Beidou satellite navigation system</searchLink><br /><searchLink fieldCode="DE" term="%22Geosynchronous+orbits%22">Geosynchronous orbits</searchLink><br /><searchLink fieldCode="DE" term="%22Global+Positioning+System%22">Global Positioning System</searchLink><br /><searchLink fieldCode="DE" term="%22Orbits+%28Astronomy%29%22">Orbits (Astronomy)</searchLink><br /><searchLink fieldCode="DE" term="%22Orbit+determination%22">Orbit determination</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Compared to the traditional ionospheric-free (IF) precise point positioning (PPP) model, the undifferenced and uncombined (UU) PPP has the advantages of lower observation noise and the ability to obtain ionospheric information. Thanks to the IGS (International GNSS Service), real-time service (RTS) can provide RT vertical total electron content (VTEC) products, and an enhanced RT UU-PPP based on the RT-VTEC constraints can be achieved. The global performance of the BeiDou Navigation Satellite System-2 (BDS-2) and BDS-3 joint RT UU-PPP using different RTS products was investigated. There is not much difference in the RTS orbit accuracy of medium earth orbit (MEO) satellites among all analysis centers (ACs), and the optimal orbit accuracy is better than 5, 9, and 7 cm in the radial, along-track, and cross-track directions, respectively. The orbit accuracy of inclined geosynchronous orbit (IGSO) satellites is worse than that of MEO satellites. Except for CAS of 0.46 ns, the RTS clock accuracy of MEO satellites for other ACs achieves 0.2–0.27 ns, and the corresponding accuracy is about 0.4 ns for IGSO satellites. In static positioning, due to the limited accuracy of RT-VTEC, the convergence time of the enhanced RT UU-PPP is longer than that of RT IF-PPP for most ACs and can be better than 25 and 20 min in the horizontal and vertical components, respectively. After convergence, the 3D positioning accuracy of the static RT UU-PPP is improved by no more than 8.7%, and the optimal horizontal and vertical positioning accuracy reaches 3.5 and 7.0 cm, respectively. As for the kinematic mode with poor convergence performance, with the introduction of RT-VTEC constraints, the convergence time of RT UU-PPP can be slightly shorter and reaches about 55 and 60 min in the horizontal and vertical components, respectively. Both the horizontal and vertical positioning accuracies of the kinematic RT UU-PPP can be improved and achieve around 7.5 and 10 cm, respectively. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Remote Sensing is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/rs16050788 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 20 StartPage: 788 Subjects: – SubjectFull: Beidou satellite navigation system Type: general – SubjectFull: Geosynchronous orbits Type: general – SubjectFull: Global Positioning System Type: general – SubjectFull: Orbits (Astronomy) Type: general – SubjectFull: Orbit determination Type: general Titles: – TitleFull: Investigating the Global Performance of the BDS-2 and BDS-3 Joint Real-Time Undifferenced and Uncombined Precise Point Positioning Using RTS Products from Different Analysis Centers. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wang, Ahao – PersonEntity: Name: NameFull: Zhang, Yize – PersonEntity: Name: NameFull: Chen, Junping – PersonEntity: Name: NameFull: Wang, Hu – PersonEntity: Name: NameFull: Luo, Tianning – PersonEntity: Name: NameFull: Gong, Mingyou – PersonEntity: Name: NameFull: Liu, Quanpeng IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 20724292 Numbering: – Type: volume Value: 16 – Type: issue Value: 5 Titles: – TitleFull: Remote Sensing Type: main |
| ResultId | 1 |
