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    Integrity Monitoring Using ARAIM in Bridging DFMC SBAS Outages for Road Transport

    81387.pdf (803.6Kb)
    Access Status
    Open access
    Authors
    Wang, Kan
    El-Mowafy, Ahmed
    Wu, Jizhong
    Date
    2020
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Wang, K. and El-Mowafy, A. and Wu, J. 2020. Integrity Monitoring Using ARAIM in Bridging DFMC SBAS Outages for Road Transport. In: Proceedings of the 33rd International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2020) Meeting, pp. 2430-2439, ION. 21-25 Sep 2020, Virtual Online.
    Source Conference
    The 33rd International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2020) Meeting
    DOI
    10.33012/2020.17659
    Faculty
    Faculty of Science and Engineering
    School
    School of Earth and Planetary Sciences (EPS)
    URI
    http://hdl.handle.net/20.500.11937/81263
    Collection
    • Curtin Research Publications
    Abstract

    The new generation of the satellite-based augmentation system (SBAS) has been initiated in Australia and New Zealand since 2017 and is anticipated to be a fully operational system by 2023. In addition to the traditional L1 service, the new SBAS also supports the dual-frequency multi-constellation (DFMC) service and the precise point positioning (PPP) service for GPS and Galileo dual-frequency users. Making use of the DFMC SBAS service, horizontal positioning accuracy at sub-meter to meter level can be realized in real-time depending on the measurement environment, which should benefit users of the intelligent transport system (ITS) in road transport. The integrity monitoring is essential for the ITS users to guarantee the reliability of the positioning service. During possible outage of the SBAS messages, the integrity monitoring of the DFMC SBAS positioning becomes difficult due to the missing corrections integrity information that should be updated regularly. Even when relieving these strict time-out windows for land-based applications, the increase of the horizontal protection levels (HPLs) with time is shown to be dramatic. In this contribution, a modified version of the advanced receiver autonomous integrity monitoring (ARAIM) algorithm is used during such SBAS outages. The HPLs are computed based on the ARAIM algorithm with different integrity parameters assumed to investigate their impact on the HPL. Under the expectation that higher precision of the satellite clocks and orbit corrections can be achieved for the new generations of the GPS and Galileo satellites in the future, the HPLs computed with the proposed modified ARAIM algorithm are shown to be close to the level of those based on the DFMC SBAS. In such a case, the ARAIM is expected to be a useful alternative approach for bridging the integrity monitoring of the non-safety-of-life ITS applications during the SBAS outages.

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    • Second Generation SBAS – Performance Analysis and Bridging Positioning and Integrity Monitoring during SBAS Outages in the Urban Environment
      El-Mowafy, Ahmed ; Wang, Kan (2019)
      Improved SBAS is expected to be a primary positioning method for many land applications such as Intelligent Transport Systems (ITS). In 2017, a second-generation SBAS test-bed was initiated in Australia and New-Zealand ...
    • Second generation SBAS - Performance analysis and bridging positioning and integrity monitoring during SBAS outages in the urban environment
      El-Mowafy, Ahmed ; Wang, K. (2019)
      © 2019, Institute of Navigation. Improved SBAS is expected to be a primary positioning method for many land applications such as Intelligent Transport Systems (ITS). In 2017, a second-generation SBAS test-bed was initiated ...
    • Second Generation SBAS – Performance Analysis and Bridging Positioning and Integrity Monitoring during SBAS Outages in the Urban Environment
      El-Mowafy, Ahmed ; Wang, Kan (2019)
      Improved SBAS is expected to be a primary positioning method for many land applications such as Intelligent Transport Systems (ITS). In 2017, a second-generation SBAS test-bed was initiated in Australia and New-Zealand ...
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