TY - GEN
T1 - Measurement error models and fault-detection algorithms for multi-constellation navigation systems
AU - Joerger, Mathieu
AU - Neale, Jason
AU - Pervan, Boris
AU - Datta-Barua, Seebany
PY - 2010
Y1 - 2010
N2 - The integration of ranging signals from multiple satellite constellations opens the possibility for rapid, robust and accurate positioning over wide areas. Algorithms for the simultaneous estimation of carrier phase cycle ambiguities and user position and for the detection of faults over a fixed smoothing time-interval were derived in previous work. For high-integrity precision applications, ensuring the robustness of measurement error and fault-models is an exacting task, especially when considering sequences of observations. In this research, a new RAIM-based approach is established, which aims at directly determining the worst-case single-satellite fault profile. Also, the robustness of newly derived ionospheric error models is experimentally evaluated using dual-frequency GPS data collected over several months at multiple locations. An integrity analysis is devised to quantify the impact of traveling ionospheric disturbances (TIDs) on the final user position solution. Finally, overall navigation system performance is assessed for various combinations of GPS, Galileo and low earth orbiting Iridium satellite signals.
AB - The integration of ranging signals from multiple satellite constellations opens the possibility for rapid, robust and accurate positioning over wide areas. Algorithms for the simultaneous estimation of carrier phase cycle ambiguities and user position and for the detection of faults over a fixed smoothing time-interval were derived in previous work. For high-integrity precision applications, ensuring the robustness of measurement error and fault-models is an exacting task, especially when considering sequences of observations. In this research, a new RAIM-based approach is established, which aims at directly determining the worst-case single-satellite fault profile. Also, the robustness of newly derived ionospheric error models is experimentally evaluated using dual-frequency GPS data collected over several months at multiple locations. An integrity analysis is devised to quantify the impact of traveling ionospheric disturbances (TIDs) on the final user position solution. Finally, overall navigation system performance is assessed for various combinations of GPS, Galileo and low earth orbiting Iridium satellite signals.
KW - Fault detection
KW - Iridium
KW - Multi-constellation
KW - Robust modeling
KW - Traveling ionospheric disturbance (TID)
UR - http://www.scopus.com/inward/record.url?scp=77955042797&partnerID=8YFLogxK
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U2 - 10.1109/PLANS.2010.5507228
DO - 10.1109/PLANS.2010.5507228
M3 - Conference contribution
AN - SCOPUS:77955042797
SN - 9781424450367
T3 - Record - IEEE PLANS, Position Location and Navigation Symposium
SP - 927
EP - 946
BT - IEEE/ION Position, Location and Navigation Symposium, PLANS 2010
T2 - IEEE/ION Position, Location and Navigation Symposium, PLANS 2010
Y2 - 4 May 2010 through 6 May 2010
ER -