Tightly-coupled GIS data in GNSS fix computations with integrity testing. (15th May 2008)

• Record Type: Journal Article
• Authors: Fouque, C.; Bonnifait, Ph.
• Is Part Of: International journal of intelligent information and database systems. Volume 2:Number 2(2008)
• Page Start: 167
• Page End: 186
• Publication Date: 2008-05-15
• Subjects: outdoor localisation -- global navigation satellite systems -- GNSS -- GIS data -- tightly coupled data fusion -- integrity monitoring -- geographic information systems -- map matching -- road networks -- road selection; Database management -- Computer programs -- Periodicals; Information retrieval -- Computer programs -- Periodicals; Information storage and retrieval systems -- Computer programs -- Periodicals; Artificial intelligence -- Periodicals; Expert systems (Computer science) -- Periodicals; Intelligent agents (Computer software) -- Periodicals; 006.33
• Languages: English
• ISSNs: 1751-5858

Abstract

Global Navigation Satellite Systems (GNSS) are often used to localise a receiver with respect to a given map. This association problem, also known as map-matching, is usually addressed using estimated positions computed by the GNSS receiver. In this paper we propose a method that combines the cartographic data in the GNSS computation fix itself. We focus on the use of a road network provided by cartographers such as NavTeQ or TeleAtlas. Geo-referenced data is modelled by segments that can be used as constraints or fused with the pseudo-ranges. Using residuals, a new method for tackling the underlying problem of the road selection is proposed. We show that this approach is also well adapted to the integrity problem of map-matching, since a consistency test is derived. Experimental results illustrate the performance of this method with different maps.