Title :
Uninterrupted portable car navigation system using GPS, map and inertial sensors data
Author :
Davidson, Pavel ; Vázquez, Manuel A. ; Piché, Robert
Author_Institution :
Tampere Univ. of Technol., Tampere, Finland
Abstract :
This paper presents the development of car navigation system for portable navigation devices and car telematics applications. The objective was to develop a system that can provide uninterrupted reliable navigation even when GPS signals are not available. The approach uses digital maps, 3D accelerometer and one gyro for directional measurements to improve positioning availability and reliability in weak signal environment and during short GPS signal outages. This system does not require vehicle installation and can be easily transferred between vehicles. Loosely coupled extended Kalman filter and probabilistic map-matching algorithm provide optimally tuned navigation solution and continuous auto calibration of inertial sensors. A real-time prototype was built. The system accuracy performance was investigated using field tests in an urban environment.
Keywords :
Global Positioning System; Kalman filters; driver information systems; inertial navigation; radionavigation; road vehicles; 3D accelerometer; GPS; car telematics application; digital map; directional measurement; extended Kalman filter; inertial sensors data; portable car navigation system; probabilistic map matching algorithm; Accelerometers; Availability; Calibration; Global Positioning System; Navigation; Position measurement; Prototypes; Sensor systems; Telematics; Vehicles; GPS; Kalman filtering; driver assistance; land vehicle navigation; map-matching;
Conference_Titel :
Consumer Electronics, 2009. ISCE '09. IEEE 13th International Symposium on
Conference_Location :
Kyoto
Print_ISBN :
978-1-4244-2975-2
Electronic_ISBN :
978-1-4244-2976-9
DOI :
10.1109/ISCE.2009.5156849