Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioning
Abstract Integrity monitoring for precise point positioning is critical for safety-related applications. With the increasing demands of high-accuracy autonomous navigation for unmanned ground and aerial vehicles, the integrity monitoring method of high-precision positioning has become an essential r...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-04-01
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| Series: | Satellite Navigation |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s43020-023-00099-1 |
| _version_ | 1797849836219793408 |
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| author | Wenhao Zhang Jinling Wang |
| author_facet | Wenhao Zhang Jinling Wang |
| author_sort | Wenhao Zhang |
| collection | DOAJ |
| description | Abstract Integrity monitoring for precise point positioning is critical for safety-related applications. With the increasing demands of high-accuracy autonomous navigation for unmanned ground and aerial vehicles, the integrity monitoring method of high-precision positioning has become an essential requirement. While high precision Global Navigation Satellite Systems (GNSS) positioning is widely used in such applications, there are still many difficulties in the integrity monitoring method for the multi-frequency multi-GNSS undifferenced and uncombined Precise Point Positioning (PPP). The main difficulties are caused by using the measurements of multiple epochs in PPP. Based on the baseline Multiple Hypothesis Solution Separation (MHSS) Advanced Receiver Autonomous Integrity Monitoring (ARAIM) algorithm, this paper discusses the feasibility of the pseudorange-based baseline ARAIM method on the single-epoch PPP based on Real-Time Kinematic (RTK) networks (PPP-RTK) framework to overcome these difficulties. In addition, a new scheme is proposed to transfer the conventional PPP process into the single-epoch PPP-RTK framework. The simulation results using the proposed model are analyzed in this study. The Protection Levels (PLs) estimated by PPP Wide-lane Ambiguity Resolution (PPP-WAR) model with regional corrections can reach the meter level and the PLs estimated by PPP Ambiguity Resolution (PPP-AR) and PPP-RTK models are usually the sub-meter level. Given a horizontal Alert Limit (AL) of 1.5 m, the global coverage of availability above 99.9% for PPP-WAR, PPP-AR, and PPP-RTK can reach 92.6%, 99.4%, and 99.7% respectively. The results using real kinematic data also show that tight PLs can be achieved when the observation conditions are good. |
| first_indexed | 2024-04-09T18:50:37Z |
| format | Article |
| id | doaj.art-6aa5ef67a6db4a6ba45077d4f35955fa |
| institution | Directory Open Access Journal |
| issn | 2662-9291 2662-1363 |
| language | English |
| last_indexed | 2024-04-09T18:50:37Z |
| publishDate | 2023-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Satellite Navigation |
| spelling | doaj.art-6aa5ef67a6db4a6ba45077d4f35955fa2023-04-09T11:29:10ZengSpringerOpenSatellite Navigation2662-92912662-13632023-04-014111510.1186/s43020-023-00099-1Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioningWenhao Zhang0Jinling Wang1University of New South Wales (UNSW)University of New South Wales (UNSW)Abstract Integrity monitoring for precise point positioning is critical for safety-related applications. With the increasing demands of high-accuracy autonomous navigation for unmanned ground and aerial vehicles, the integrity monitoring method of high-precision positioning has become an essential requirement. While high precision Global Navigation Satellite Systems (GNSS) positioning is widely used in such applications, there are still many difficulties in the integrity monitoring method for the multi-frequency multi-GNSS undifferenced and uncombined Precise Point Positioning (PPP). The main difficulties are caused by using the measurements of multiple epochs in PPP. Based on the baseline Multiple Hypothesis Solution Separation (MHSS) Advanced Receiver Autonomous Integrity Monitoring (ARAIM) algorithm, this paper discusses the feasibility of the pseudorange-based baseline ARAIM method on the single-epoch PPP based on Real-Time Kinematic (RTK) networks (PPP-RTK) framework to overcome these difficulties. In addition, a new scheme is proposed to transfer the conventional PPP process into the single-epoch PPP-RTK framework. The simulation results using the proposed model are analyzed in this study. The Protection Levels (PLs) estimated by PPP Wide-lane Ambiguity Resolution (PPP-WAR) model with regional corrections can reach the meter level and the PLs estimated by PPP Ambiguity Resolution (PPP-AR) and PPP-RTK models are usually the sub-meter level. Given a horizontal Alert Limit (AL) of 1.5 m, the global coverage of availability above 99.9% for PPP-WAR, PPP-AR, and PPP-RTK can reach 92.6%, 99.4%, and 99.7% respectively. The results using real kinematic data also show that tight PLs can be achieved when the observation conditions are good.https://doi.org/10.1186/s43020-023-00099-1Integrity monitoringPrecise point positioningMulti-GNSSAmbiguity resolutionSingle-epoch positioning |
| spellingShingle | Wenhao Zhang Jinling Wang Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioning Satellite Navigation Integrity monitoring Precise point positioning Multi-GNSS Ambiguity resolution Single-epoch positioning |
| title | Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioning |
| title_full | Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioning |
| title_fullStr | Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioning |
| title_full_unstemmed | Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioning |
| title_short | Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioning |
| title_sort | integrity monitoring scheme for single epoch gnss ppp rtk positioning |
| topic | Integrity monitoring Precise point positioning Multi-GNSS Ambiguity resolution Single-epoch positioning |
| url | https://doi.org/10.1186/s43020-023-00099-1 |
| work_keys_str_mv | AT wenhaozhang integritymonitoringschemeforsingleepochgnssppprtkpositioning AT jinlingwang integritymonitoringschemeforsingleepochgnssppprtkpositioning |