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- W1973740568 abstract "Safe railway operation requires a reliable localization of trains in the railway network. Hence, this paper aims to improve the accuracy and reliability of train-borne localization systems proposed recently. Most of these approaches are based on a global navigation satellite system (GNSS) and odometers. However, these systems turned out to have severe shortcomings concerning accuracy and availability. The authors believe that the ability to detect turnouts and the branching direction thereon is the most valuable clue for improvement. Knowing the branching direction provides topological information about the train position. Thus, it complements the geographical information of GNSS and the longitudinal position information of odometers in an ideal way. With such a sensor setup a track-selective localization would be possible even if GNSS is unavailable or disturbed. Therefore, this paper compares the individual benefits of different sensor principles for turnout detection such as inertial measurement units (IMUs), cameras, and lidar (light detection and ranging) sensors. As a consequence, the authors focus on lidar sensors. For those the authors define requirements, review the market, and report the results of a case study in a tramway scenario. The authors proved that it is possible to detect rails, turnouts, and platforms. Finally the authors discuss the findings intensively and give an outlook on further research." @default.
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- W1973740568 date "2014-06-24" @default.
- W1973740568 modified "2023-09-25" @default.
- W1973740568 title "An analysis of different sensors for turnout detection for train-borne localization systems" @default.
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- W1973740568 doi "https://doi.org/10.2495/cr140691" @default.
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