Characteristics of BDS Signal-in-Space User Ranging Errors and Their Effect on Advanced Receiver Autonomous Integrity Monitoring Performance
Signal-In-Space User Range Errors (SIS UREs) are assumed to be overbounded by a normal distribution with a standard deviation represented by the User Range Accuracy (URA). The BeiDou Navigation Satellite System (BDS) broadcast URA is not compatible with the historical SIS URE performance that affect...
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MDPI AG
2018-12-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/18/12/4475 |
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| author | Zhipeng Wang Wei Shao Rui Li Dan Song Tinglin Li |
| author_facet | Zhipeng Wang Wei Shao Rui Li Dan Song Tinglin Li |
| author_sort | Zhipeng Wang |
| collection | DOAJ |
| description | Signal-In-Space User Range Errors (SIS UREs) are assumed to be overbounded by a normal distribution with a standard deviation represented by the User Range Accuracy (URA). The BeiDou Navigation Satellite System (BDS) broadcast URA is not compatible with the historical SIS URE performance that affects the Advanced Receiver Autonomous Integrity Monitoring (ARAIM) False Alert Probability (Pfa) and availability evaluation. This study compares the BDS broadcast and precise ephemeris from 1 March 2013 to 1 March 2017 to obtain SIS UREs. Through analyzing the statistical characteristics of the SIS UREs, we obtain the standard deviation <i>σ<sub>URE</sub></i> for the accuracy and continuity and <i>σ<sub>URA</sub></i> used for the integrity of the SIS UREs. The results show that the broadcast <i>σ<sub>URA</sub></i> of 2 m cannot completely overbound SIS UREs for all BDS satellites, but the <i>σ<sub>URA</sub></i> of 2.4 m can. Then, we use the <i>σ<sub>URA</sub></i> of 2.4 m to evaluate the ARAIM Pfa and availability. The results show that the Pfa may increase to 2 × 10<sup>−5</sup> and exceed its limit by an order of magnitude. We also consider the differences between the SIS UREs of Geostationary Earth Orbit (GEO), Inclined Geo-Synchronous Orbit (IGSO), and Medium Earth Orbit (MEO). The results indicate that all Pfa values calculated by the computed <i>σ<sub>URE</sub></i> are less than the Pfa in the Integrity Support Message (ISM) for the worst-performing GEO satellite. The approximately 55% Pfa calculated by the computed <i>σ<sub>URE</sub></i> is less than the Pfa in ISM for the worst-performing IGSO satellite. Most Pfa values calculated by the computed <i>σ<sub>URE</sub></i> is less than the Pfa in the ISM for the worst-performing MEO satellite. For BDS satellites, the Pfa is mainly affected by <i>σ<sub>URE</sub></i>. When the <i>σ<sub>URA</sub></i> of 2.4 m is used to evaluate the availability, the computed availability is lower than the availability calculated by the broadcast <i>σ<sub>URA</sub></i>/<i>σ<sub>URE</sub></i> and the greatest degradation can reach 25%. |
| first_indexed | 2024-04-11T18:45:47Z |
| format | Article |
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| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T18:45:47Z |
| publishDate | 2018-12-01 |
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| spelling | doaj.art-f1ab1a9ecf6e4364970f7f1b3b6118682022-12-22T04:08:51ZengMDPI AGSensors1424-82202018-12-011812447510.3390/s18124475s18124475Characteristics of BDS Signal-in-Space User Ranging Errors and Their Effect on Advanced Receiver Autonomous Integrity Monitoring PerformanceZhipeng Wang0Wei Shao1Rui Li2Dan Song3Tinglin Li4School of Electronic and Information Engineering, Beihang University, Beijing 100191, ChinaSchool of Electronic and Information Engineering, Beihang University, Beijing 100191, ChinaSchool of Electronic and Information Engineering, Beihang University, Beijing 100191, ChinaSchool of Electronic and Information Engineering, Beihang University, Beijing 100191, ChinaSchool of Electronic and Information Engineering, Beihang University, Beijing 100191, ChinaSignal-In-Space User Range Errors (SIS UREs) are assumed to be overbounded by a normal distribution with a standard deviation represented by the User Range Accuracy (URA). The BeiDou Navigation Satellite System (BDS) broadcast URA is not compatible with the historical SIS URE performance that affects the Advanced Receiver Autonomous Integrity Monitoring (ARAIM) False Alert Probability (Pfa) and availability evaluation. This study compares the BDS broadcast and precise ephemeris from 1 March 2013 to 1 March 2017 to obtain SIS UREs. Through analyzing the statistical characteristics of the SIS UREs, we obtain the standard deviation <i>σ<sub>URE</sub></i> for the accuracy and continuity and <i>σ<sub>URA</sub></i> used for the integrity of the SIS UREs. The results show that the broadcast <i>σ<sub>URA</sub></i> of 2 m cannot completely overbound SIS UREs for all BDS satellites, but the <i>σ<sub>URA</sub></i> of 2.4 m can. Then, we use the <i>σ<sub>URA</sub></i> of 2.4 m to evaluate the ARAIM Pfa and availability. The results show that the Pfa may increase to 2 × 10<sup>−5</sup> and exceed its limit by an order of magnitude. We also consider the differences between the SIS UREs of Geostationary Earth Orbit (GEO), Inclined Geo-Synchronous Orbit (IGSO), and Medium Earth Orbit (MEO). The results indicate that all Pfa values calculated by the computed <i>σ<sub>URE</sub></i> are less than the Pfa in the Integrity Support Message (ISM) for the worst-performing GEO satellite. The approximately 55% Pfa calculated by the computed <i>σ<sub>URE</sub></i> is less than the Pfa in ISM for the worst-performing IGSO satellite. Most Pfa values calculated by the computed <i>σ<sub>URE</sub></i> is less than the Pfa in the ISM for the worst-performing MEO satellite. For BDS satellites, the Pfa is mainly affected by <i>σ<sub>URE</sub></i>. When the <i>σ<sub>URA</sub></i> of 2.4 m is used to evaluate the availability, the computed availability is lower than the availability calculated by the broadcast <i>σ<sub>URA</sub></i>/<i>σ<sub>URE</sub></i> and the greatest degradation can reach 25%.https://www.mdpi.com/1424-8220/18/12/4475ARAIMsignal-in-space user range errorsfalse alert probabilityavailability |
| spellingShingle | Zhipeng Wang Wei Shao Rui Li Dan Song Tinglin Li Characteristics of BDS Signal-in-Space User Ranging Errors and Their Effect on Advanced Receiver Autonomous Integrity Monitoring Performance Sensors ARAIM signal-in-space user range errors false alert probability availability |
| title | Characteristics of BDS Signal-in-Space User Ranging Errors and Their Effect on Advanced Receiver Autonomous Integrity Monitoring Performance |
| title_full | Characteristics of BDS Signal-in-Space User Ranging Errors and Their Effect on Advanced Receiver Autonomous Integrity Monitoring Performance |
| title_fullStr | Characteristics of BDS Signal-in-Space User Ranging Errors and Their Effect on Advanced Receiver Autonomous Integrity Monitoring Performance |
| title_full_unstemmed | Characteristics of BDS Signal-in-Space User Ranging Errors and Their Effect on Advanced Receiver Autonomous Integrity Monitoring Performance |
| title_short | Characteristics of BDS Signal-in-Space User Ranging Errors and Their Effect on Advanced Receiver Autonomous Integrity Monitoring Performance |
| title_sort | characteristics of bds signal in space user ranging errors and their effect on advanced receiver autonomous integrity monitoring performance |
| topic | ARAIM signal-in-space user range errors false alert probability availability |
| url | https://www.mdpi.com/1424-8220/18/12/4475 |
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