A Study on a New EGNOS V2 Release with Enhanced System Performances

Bauer, F.; Greze, Gérôme; Haddad, F.; Tourtier, alice; Rols, B.; Urbanska, Katarzyna

doi:10.33012/2019.16944

Cited by 3 publications

(1 citation statement)

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“…To improve the accuracy and integrity of satellite navigation, many countries and regions have established satellite-based augmentation systems, such as the Wide Area Augmentation System (WAAS) in the United States, the European Geostationary Navigation Overlay Service (EGNOS) in Europe, the MTSAT Satellite-based Augmentation System (MSAS) in Japan and Global Positioning System (GPS)-aided geostationary Earth orbit (GEO) Augmented Navigation (GAGAN) in India [1][2][3][4]. Satellite-based augmentation systems track navigation satellites in real time using monitoring receivers located in service areas, calculate corrections, including satellite orbit and clock offset corrections and the corresponding integrity information, and then broadcast augmentation messages through GEO satellites [5].…”

Section: Introductionmentioning

confidence: 99%

A Study on Pseudorange Biases in BDS B1I/B3I Signals and the Impacts on Beidou Wide Area Differential Services

Tian

Cao

et al. 2022

Remote Sensing

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Due to satellite signal deformations, there are different constant biases in the same satellite signal that are measured by different technical types of receivers and different satellite signals that are measured by the same type of receiver, which are named pseudorange biases. These biases cannot be transmitted to users with existing navigation parameters, such as satellite time group delay (TGD) and receiver differential code biases (DCB). With the improvement of the signal-in-space accuracy of the Global Navigation Satellite System (GNSS), the pseudorange bias has become one of the primary error sources affecting the accuracy of GNSS services. To ensure the accuracy for users under the wide area differential services (WADS), we extracted the pseudorange biases of Beidou Satellite Navigation System (BDS) B1I, B3I and B1I/B3I signals and analyzed the impact of those biases on users under the WADS. Finally, we tried to eliminate this influence. The results show that the pseudorange biases of the B3I signal are smaller than those of the B1I signal at the centimeter level, but the pseudorange biases of the B1I/B3I signal can reach the meter level. Due to the large pseudorange bias of the B1I/B3I signal, the average user equivalent ranging error (UERE) under the WADS is 1.19 m, which is no better than the average UERE under open services (OS). Influenced by the pseudorange biases, the average positioning accuracies of the B1I/B3I signal are 4.17 m and 4.24 m under the WADS and the OS. When the pseudorange biases are deducted, these accuracies are 3.03 m and 3.50 m, respectively.

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Section: Introductionmentioning

confidence: 99%

A Study on Pseudorange Biases in BDS B1I/B3I Signals and the Impacts on Beidou Wide Area Differential Services

Tian

Cao

et al. 2022

Remote Sensing

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A Machine Learning Approach for Monitoring of GNSS Signal Quality in Spaceborne Receivers: Evil Waveform and RF Threats

Emmanuele

Colombo

Zago

et al. 2023

Studies in Computational Intelligence

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Development Status and Service Performance Preliminary Analysis for BDSBAS

et al. 2022

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The BeiDou global navigation satellite system (BDS-3) provides positioning, navigation and timing services for global users, moreover, it provides BDS satellite-based augmentation system (BDSBAS) single-frequency (SF) and dual-frequency multi-constellation (DFMC) services for users in China and its surrounding areas. The BDSBAS SF service is in accordance with Radio Technical Commission for Aeronautics (RTCA) standard protocol (RTCA MOPS) and augment GPS constellation, while the BDSBAS DFMC service is in line with SBAS L5 DFMC standard protocol and is aimed at supporting any combination of BDS/GPS/Galileo/GLONASS constellations, including only a single constellation operation. We introduced the development status of the BDSBAS system, including the system architecture and navigation user algorithms. Based on the GPS measurements, the accuracy, integrity and availability of the BDSBAS SF service were evaluated, and with the BDS measurements, the accuracy of the BDSBAS DFMC service was preliminarily analyzed. The integrity and availability of the BDSBAS DFMC service will be discussed in future work as some of the DFMC integrity parameters are still under discussion for optimization. The results show that, for BDSBAS SF service, the horizontal and vertical position accuracy were about 1.0 m and 2.0 m (95%), respectively, which were improved by 39% and 33%, respectively, compared with the GPS SF position accuracy. For BDSBAS DFMC service, the horizontal and vertical position accuracy were about 0.6 m and 1.2 m (95%), respectively, which were improved by about 25% and 20% compared with the BDS dual-frequency position accuracy. No system integrity risk event was detected during the testing period for BDSBAS SF service. The average availability of the BDSBAS SF service was about 98% which was mainly affected by the availability of ionospheric grid delay corrections.

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A Study on a New EGNOS V2 Release with Enhanced System Performances

Cited by 3 publications

References 0 publications

A Study on Pseudorange Biases in BDS B1I/B3I Signals and the Impacts on Beidou Wide Area Differential Services

A Study on Pseudorange Biases in BDS B1I/B3I Signals and the Impacts on Beidou Wide Area Differential Services

A Machine Learning Approach for Monitoring of GNSS Signal Quality in Spaceborne Receivers: Evil Waveform and RF Threats

Development Status and Service Performance Preliminary Analysis for BDSBAS

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