GNSS accuracy enhancement based on pseudo range error estimation in an urban propagation environment
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TLDR
A new positioning algorithm based on signals only with pseudo range error modeling in association with an adapted filtering process is proposed and it is shown that both positioning error and availability can be improved.Abstract:
For new ITS applications, positioning solutions will require to be more accurate and available. The most common technique used today is composed of a GPS receiver, sometimes aided by other sensors. GPS, and GNSS in general, suffer from masking effects and propagation disturbances in urban areas that cause biases on pseudo range measurements. Mitigation solutions sometimes propose to detect and exclude outliers but in land transportation applications, such a decision reduces dramatically the service availability and thus, the interest of satellite-based solutions. In order to optimize the use the satellites received, we propose a new positioning algorithm based on signals only with pseudo range error modeling in association with an adapted filtering process. The model and the filter have been validated with simulation data performed along an urban bus line and have shown that both positioning error and availability can be improved. Along the trajectory tested, the mean accuracy has been reduced from 5.3m with a classical filter to 2.6m with our algorithm with 89% of the points more accurate than 5m instead of 64% before.read more
Citations
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Journal ArticleDOI
Reliable Urban Canyon Navigation Solution in GPS and GLONASS Integrated Receiver Using Improved Fuzzy Weighted Least-Square Method
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Outlier Detection in GNSS Pseudo-Range/Doppler Measurements for Robust Localization
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Dissertation
Positionner par satellite dans les environnements transports. Impact du canal de propagation sur les performances de localisation GNSS.
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From extended integrity monitoring to the safety evaluation of satellite-based localisation system
Cyril Legrand,Cyril Legrand,Julie Beugin,Julie Beugin,Juliette Marais,Juliette Marais,Blaise Conrard,El-Miloudi El-Koursi,El-Miloudi El-Koursi,Marion Berbineau,Marion Berbineau +10 more
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Performance analysis of GLONASS integration with GPS vectorised receiver in urban canyon positioning
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References
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Book
Global Positioning Systems, Inertial Navigation, and Integration
TL;DR: The authors explore the various subtleties, common failures, and inherent limitations of the theory as it applies to real-world situations, and provide numerous detailed application examples and practice problems, including GNSS-aided INS, modeling of gyros and accelerometers, and SBAS and GBAS.
Journal ArticleDOI
Statistical modeling of the LMS channel
TL;DR: A statistical model for the land mobile satellite (LMS) channel is presented that is capable of describing both narrow- and wide-band conditions and can be used to study links with geostationary as well as nongeostationARY satellites.
Journal ArticleDOI
Evaluation of CACC string stability using SUMO, Simulink and OMNeT++
Chenxi Lei,Emiel Martijn van Eenennaam,Wouter Klein Wolterink,Jeroen Ploeg,Georgios Karagiannis,Geert Heijenk +5 more
TL;DR: The string stability of CACC is discussed and its performance under varying packet loss ratios, beacon sending frequencies, and time headway settings in simulation experiments is evaluated.
Journal ArticleDOI
Analysis of availability improvement in LMSS by means of satellite diversity based on three-state propagation channel model
TL;DR: An LMSS propagation channel model for assessing the effect of a satellite diversity scheme so that high service availability and high signal quality are assured and a new fading channel model is developed.
Journal ArticleDOI
NLOS GPS signal detection using a dual-polarisation antenna
Ziyi Jiang,Paul D. Groves +1 more
TL;DR: The potential of using dual-polarisation antenna technology for detecting and mitigating the reception of NLOS signals and severe multipath interference is explored and the point positioning results were dramatically improved by excluding the detected NLOS measurements.
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