ENHANCING GPS POSITIONING ACCURACY FROM THE GENERATION OF GROUND-TRUTH REFERENCE POINTS FOR ON-ROAD URBAN NAVIGATION

Mussa Bshara, Umut Orguner, Fredrik Gustafsson, Leo Van Biesen

Abstract

The global positioning system (GPS) is a Global Navigation Satellite System (GNSS) uses a constellation of between 24 and 32 Medium Earth Orbit satellites that transmit precise microwave signals, which enable GPS receivers to determine their current location, the time, and their velocity. Initially, the GPS was developed for military applications, but very quickly became the most used technology in positioning even for end-user applications run by individuals with no technical skills. GPS reading are used also as reference points for many positioning techniques such as the techniques that depend on the transmitted electromagnetic signal to determine the position of the transmitter or the receiver, due to their superior accuracy comparing to such techniques. But how accurate are those readings, and how to obtain accurate reference points starting from raw GPS observations even when they are corrupted with errors.<BR />In this paper, a practical study about GPS positioning is provided. Generating the ground-truth reference points depending on GPS observations is also provided and discussed in details.

Keywords

GPS, Particle filter, positioning, map information

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IMEKO-WC-2012-TC4-O16.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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