GPS/SBAS and Additional Sensor Integration for Pedestrian Applications in Difficult Environments

Günther Abwerzger, Bernhard Hofmann-Wellenhof, Björn Ott and Elmar Wasle

Abstract:	Satellite navigation has become an emerging and important positioning source for a wide range of applications, many of which going much beyond the traditional transport sector. One example is personal mobility including dense urban, indoor, and outdoor applications. Practically all of the current applications rely on the GPS signals, sometimes also exploiting regional or local augmentations for better accuracy. However, especially in pedestrian user environments, like dense urban canyons or even indoors, the performance of GNSS (including conventional terrestrial and/or satellite based augmentation systems) reaches well known technological limits. To overcome these limitations, the project “Definition and Demonstration of Special Handheld based Applications in Difficult Environment” (SHADE) has been launched. The project is funded by the European Space Agency (ESA) and aims at introducing navigation technologies within the above mentioned difficult environments. Three different and independent navigation prototypes, also called “Pilots”, were developed and tested within SHADE. Beside the positioning and navigation task, a second key area within the SHADE project is the visualization component: A service-centre based visualization generation was developed to provide additional information to the mission control unit, as well as to the mobile teams, operating in various operational areas. The paper presents in particular the system architecture of SHADE and the design of the three different integrated navigation technologies, including the integrity processing approach. Field test results complement the presented technical information.
Published in:	Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004) September 21 - 24, 2004 Long Beach Convention Center Long Beach, CA
Pages:	766 - 774
Cite this article:	Abwerzger, Günther, Hofmann-Wellenhof, Bernhard, Ott, Björn, Wasle, Elmar, "GPS/SBAS and Additional Sensor Integration for Pedestrian Applications in Difficult Environments," Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004), Long Beach, CA, September 2004, pp. 766-774.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In