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An Accurate Cooperative Positioning System for Vehicular Safety Applications

Abstract : Typical Global Navigation Satellite System (GNSS) receivers offer precision in the order of meters. This error margin is excessive for vehicular safety applications , such as forward collision warning, autonomous intersection management, or hard braking sensing. In this work we develop CooPS, a GNSS positioning system that uses Vehicle to Vehicle (V2V) and Vehicle to Infrastructure (V2I) communications to cooperatively determine absolute and relative position of the ego-vehicle with enough precision. To that end, we use differential GNSS through position vector differencing to acquire track and across-track axes projections , employing elliptical and spherical geometries. We evaluate CooPS performance by carrying out real experiments using off-the-shelf IEEE 802.11p equipment at the campus of the Federal University of Rio de Janeiro. We obtain an accuracy level under 1.0 and 1.5 m for track (where-in-lane) and across-track (which-lane) axes, respectively. These accuracy levels were achieved using a 2.5 m accuracy circular error probable (CEP) of 50% and a 5 Hz navigation update rate GNSS receiver.
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Submitted on : Thursday, November 14, 2019 - 9:16:44 PM
Last modification on : Wednesday, November 3, 2021 - 4:13:49 AM
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João Pinto Neto, Lucas Gomes, Fernando Ortiz, Thales Almeida, Miguel Elias Mitre Campista, et al.. An Accurate Cooperative Positioning System for Vehicular Safety Applications. Computers and Electrical Engineering, Elsevier, 2020, 83, ⟨10.1016/j.compeleceng.2020.106591⟩. ⟨hal-02364355⟩



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