An Approach to Positioning Road-Users in a Telematics Network
Paper in proceedings, 2007

In this invited paper, we discuss positioning of road-users in a traffic environment. Once accurate and reliable position information can be made available, many interesting and innovative telematics applications may be realized. Some of the problems facing radio-frequency (RF) based positioning systems today include blocked RF channels and multipath propagation, complicating distance estimation between network members and between network members and the infrastructure. In this work, we propose a novel estimator of range operating on an ultra-wideband (UWB) physical layer. This distance estimator has been designed specifically with a novel type of positioning algorithm in mind, based on the method of projections onto convex sets. Also, we investigate the feasibility of positioning users that are not members of the telematics network based on arbitrary transmitted RF signals. Numerical simulations, using channel models recently adopted by the IEEE 802.15.4a working group, confirm the robustness and accuracy of the proposed approach in the presence of both non-line-of-sight (NLOS) channels, and severe multipath propagation.

Author

Mats Rydström

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Erik Ström

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Arne Svensson

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Luca Reggiani

Polytechnic University of Milan

Proceedings IEEE International Symposium on Autonomous Decentralized Systems, Sedona, Arizona, USA

335-343

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/ISADS.2007.13

ISBN

076952804X

More information

Latest update

3/29/2018