Title: Performance Evaluation of the 3D MAP Based Precise Positioning and its Application
Author(s): Nobuaki Kubo, Rei Furukawa
Published in: Proceedings of IEEE/ION PLANS 2018
April 23 - 26, 2018
Hyatt Regency Hotel
Monterey, CA
Pages: 1256 - 1263
Cite this article: Kubo, Nobuaki, Furukawa, Rei, "Performance Evaluation of the 3D MAP Based Precise Positioning and its Application," Proceedings of IEEE/ION PLANS 2018, Monterey, CA, April 2018, pp. 1256-1263.
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Abstract: In this study, actual measurement data in an urban area was obtained, and a simulation using 3D maps was implemented. A high precision positional measurement system was equipped on a vehicle in order to collect actual measurements and positional data at each measurement time. The data obtained by the measurement system was used as the reference coordinate for both the simulation and the actual measurements. Consequently, comparison between the simulation and actual measurement data on satellite visibility was implemented for the first time. A dominant deterioration factor of positional accuracy is Non-line-of-sight (NLoS) signals caused by reflection or diffraction from the buildings. If our simulation tells us that the satellites can be received as a Line-of-sight (LoS) signals, we will use the satellite in the real navigation solution especially in RTK-GNSS using the actual measurements data. This satellite selection method using 3D map was validated in this paper. Availability of RTK was improved more than 30% near the building. In addition to the static test, we tried to predict the availability of car RTK based on the 3D map based simulation. The simulated availability of RTK matches with the actual availability of RTK to some degree.