An Efficient Fault Detection and Exclusion Method for Ephemeris Monitoring
The ephemeris fault needs to be detected and mitigated in the ground-based augmentation system to provide precision approach for the aircraft. In the current fault detection and exclusion (FDE) method, the double-differenced carrier phase (DDCP) observation is used as a test statistic to detect a fa...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/15/13/3259 |
| _version_ | 1797590915589603328 |
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| author | Yiping Jiang Wang Li Hengwei Zhang |
| author_facet | Yiping Jiang Wang Li Hengwei Zhang |
| author_sort | Yiping Jiang |
| collection | DOAJ |
| description | The ephemeris fault needs to be detected and mitigated in the ground-based augmentation system to provide precision approach for the aircraft. In the current fault detection and exclusion (FDE) method, the double-differenced carrier phase (DDCP) observation is used as a test statistic to detect a faulty satellite caused by an ephemeris fault, taking advantage of the residual spatial gradient. However, the current FDE method cannot distinguish whether the fault comes from a reference satellite (RS) or a non-reference satellite (NRS) in DDCP. One way to address this issue is to pre-validate the RS before it can be used to form a DDCP test statistic for detecting ephemeris fault on the NRS. The RS is pre-validated using the previous ephemeris for any newly acquired and re-acquired satellite. This method is developed in detail to present the shortcomings. A more efficient FDE method using multiple hypothesis testing to detect ephemeris fault on both the RS and NRS simultaneously in real time is proposed. Moreover, to facilitate the application in integrity monitoring, the test risks and minimum detectable error are analyzed. The numerical results of the proposed FDE method show an improved performance in detecting ephemeris fault on the RS and a comparable performance on the NRS compared with the current FDE method. |
| first_indexed | 2024-03-11T01:30:29Z |
| format | Article |
| id | doaj.art-907950cd23ea4cd5827111a7edf06658 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-11T01:30:29Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-907950cd23ea4cd5827111a7edf066582023-11-18T17:23:39ZengMDPI AGRemote Sensing2072-42922023-06-011513325910.3390/rs15133259An Efficient Fault Detection and Exclusion Method for Ephemeris MonitoringYiping Jiang0Wang Li1Hengwei Zhang2Interdisciplinary Division of Aeronautical and Aviation Engineering, Hong Kong Polytechnic University, Hong Kong SAR, ChinaInterdisciplinary Division of Aeronautical and Aviation Engineering, Hong Kong Polytechnic University, Hong Kong SAR, ChinaInterdisciplinary Division of Aeronautical and Aviation Engineering, Hong Kong Polytechnic University, Hong Kong SAR, ChinaThe ephemeris fault needs to be detected and mitigated in the ground-based augmentation system to provide precision approach for the aircraft. In the current fault detection and exclusion (FDE) method, the double-differenced carrier phase (DDCP) observation is used as a test statistic to detect a faulty satellite caused by an ephemeris fault, taking advantage of the residual spatial gradient. However, the current FDE method cannot distinguish whether the fault comes from a reference satellite (RS) or a non-reference satellite (NRS) in DDCP. One way to address this issue is to pre-validate the RS before it can be used to form a DDCP test statistic for detecting ephemeris fault on the NRS. The RS is pre-validated using the previous ephemeris for any newly acquired and re-acquired satellite. This method is developed in detail to present the shortcomings. A more efficient FDE method using multiple hypothesis testing to detect ephemeris fault on both the RS and NRS simultaneously in real time is proposed. Moreover, to facilitate the application in integrity monitoring, the test risks and minimum detectable error are analyzed. The numerical results of the proposed FDE method show an improved performance in detecting ephemeris fault on the RS and a comparable performance on the NRS compared with the current FDE method.https://www.mdpi.com/2072-4292/15/13/3259fault detection and exclusionspatial gradient monitorintegrity monitoring |
| spellingShingle | Yiping Jiang Wang Li Hengwei Zhang An Efficient Fault Detection and Exclusion Method for Ephemeris Monitoring Remote Sensing fault detection and exclusion spatial gradient monitor integrity monitoring |
| title | An Efficient Fault Detection and Exclusion Method for Ephemeris Monitoring |
| title_full | An Efficient Fault Detection and Exclusion Method for Ephemeris Monitoring |
| title_fullStr | An Efficient Fault Detection and Exclusion Method for Ephemeris Monitoring |
| title_full_unstemmed | An Efficient Fault Detection and Exclusion Method for Ephemeris Monitoring |
| title_short | An Efficient Fault Detection and Exclusion Method for Ephemeris Monitoring |
| title_sort | efficient fault detection and exclusion method for ephemeris monitoring |
| topic | fault detection and exclusion spatial gradient monitor integrity monitoring |
| url | https://www.mdpi.com/2072-4292/15/13/3259 |
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