Automotive Urban Assist Enabled by Satellite Navigation Technology

E. Wasle, M. Lytvyn, P. Berglez, C. Mongredien, A. Kahmann

Abstract:	The primary objective of advanced driver assistant system (ADAS) is to disburden the driver in complex traffic situations, thereby mainly increasing the safety of the driver and other road users and reducing the number of accidents. Automotive Urban Assist in particular aims to significantly reduce the number of urban road accidents and consequently the number of injured and killed people in road traffic. The better the ADAS perceives the environment as it would be perceived by the driver, the better the system can evaluate the situation and react appropriately. The static situation consists of the number of lanes, the driving direction, the existence of traffic lights, etc. This can be provided in form of attributed maps, which have to have sufficient accuracy in order to clearly identify lanes or the position of stop-lines. The dynamic situation, thus the oncoming traffic, the status of the traffic light, or the own position, has to be determined in real-time. The interaction of various sensors is needed in order to acquire all necessary information. Thereby, a certain level of redundancy increases the level of integrity. Satellite navigation receivers are increasingly used as an additional sensor within different kinds of ADAS. Accuracy, availability, but above all reliability and integrity are important performance measures which have to be met by GNSS receivers in order to find their way into ADAS. The GNSS sensor provides the absolute position, velocity, and time reference for the integrated system, which is additionally connected to the existing on-board electronics and diagnostics. The GNSS sensor, moreover, is at the moment the only mean to relate the static situation stored in maps with the dynamic situation perceived. This makes implementing GNSS in ADAS interesting and essential. The research work described is conducted within the European GNSS Agency funded project Galileo / EGNOS Enhanced Driver Assistance (GENEVA) with the final objective to support the driver in critical situations in particular in urban intersections. This paper introduces the GENEVA project and specifies the automotive Urban Assist application and highlights the selected scenarios under test: left-turn assistance and stop-line assistance. Further it describes the automotive, multi-frequency GNSS receiver and its positioning software which both are under development, and the assistance and differential data server which provides all required data via a safe and reliable wireless communication link.
Published in:	Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011) September 20 - 23, 2011 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	349 - 355
Cite this article:	Wasle, E., Lytvyn, M., Berglez, P., Mongredien, C., Kahmann, A., "Automotive Urban Assist Enabled by Satellite Navigation Technology," Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011), Portland, OR, September 2011, pp. 349-355.
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