Reliable Positioning and Journey Planning for Intelligent Transport Systems. Advanced Energy Management, Modelling and Control for Intelligent and Efficient Transport Systems
MetadataShow full item record
Originally published as cited above, by InTechOpen
Safety and reliability of Intelligent Transport Systems applications require positioning accuracy at the sub-meter level with availability and integrity above 99%. At present, no single positioning sensor can meet these requirements in particular in the urban environment. Possible sensors that can be used for this task are first reviewed. Next, a suggested integrated system of low-cost Real-time Kinematic (RTK) GNSS, Inertial Measurement Units (IMU) and vehicle odometer is discussed. To ensure positioning integrity, a method for fault detection in GNSS observations and computation of the Protection Levels (PL) that bound the position errors at a pre-set risk probability of the integrated sensors are presented. A case study is performed for demonstration. Moreover, to save energy, reduce pollution, and to improve economy of the trip, proper journey planning is required. A new approach is introduced using 3D city models to predict the route with the best positioning integrity, availability and precision for route selection among different possible routes. Practical demonstration shows that effectiveness of this method. Finally, the potential of using the next generation SBAS for ITS applications was tested using kinematic tests carried out in various environments characterized by different levels of sky-visibility that may affect observations from GNSS.
Showing items related by title, author, creator and subject.
A review of system integration and current integrity monitoring methods for positioning in intelligent transport systemsHassan, Tarek; El-Mowafy, Ahmed ; Wang, Kan (2020)Applications of intelligent transportation systems are continuously increasing. Since positioning is a key component in these systems, it is essential to ensure its reliability and robustness, and monitor its integrity ...
Arora, Balwinder Singh (2012)The precise positioning applications have long been carried out using dual frequency carrier phase and code observables from the Global Positioning System (GPS). The carrier phase observables are very precise in comparison ...
Integrity monitoring of vehicle positioning in urban environment using RTK-GNSS, IMU and speedometerEl-Mowafy, Ahmed; Kubo, N. (2017)© 2017 IOP Publishing Ltd.Continuous and trustworthy positioning is a critical capability for advanced driver assistance systems (ADAS). To achieve continuous positioning, methods such as global navigation satellite systems ...