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Fakultät für Elektrotechnik und Informationstechnik
B. Niehöfer, F. Schweikowski, C. Wietfeld

Local interference compensation (LOCATe) for GNSS-based Lane-Specific Positioning of Vehicles

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in
  • Univ.-Prof. Dr.-Ing. Christian Wietfeld
  • Publications
  • TaMIS
  • SFB 876

In IEEE Vehicular Technology Conference (VTC-Spring), Nanjing, China, May 2016.

Abstract:

Precise traffic prediction and automated driving require accurate and reliable positioning information to be communicated to neighbouring vehicles as well as centralized traffic management centres. This paper proposes and evaluates the so-called Local Interference Compensation (LOCATe) method, which is a cloud-aided solution to provide lane-specific positioning information of vehicles. With LOCATe, location errors of satellite-based positioning systems caused by shadowing and multi-path fading of the environment are predicted, quantified and compensated by identifying those impacts with ray-tracing techniques applied to a 3D model of the environment. The paper introduces significant improvements of the original LOCATe approach which lead to both an enhanced accuracy and a reduction of the computation time to reach nearly real-time capability. Based on raw data gained with an open Software-Defined Radio implementation in a real-life environment, the efficiency of different LOCATe variants is evaluated and discussed. The results show, that the so-called real-time LOCATe provides significant improvements to the accuracy with only moderate additional CPU complexity/time compared to an ordinary GPS positioning estimation.