Title: Localization in Urban Canyon: Machine Learning based Localization Using LTE or LoRa Signal for ‘GNSS-denied’ Areas
Author(s): Boseon Yu, Beomju Shin, Jungho Lee, Seoho Lee, Taikjin Lee
Published in: Proceedings of the 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017)
September 25 - 29, 2017
Oregon Convention Center
Portland, Oregon
Pages: 456 - 462
Cite this article: Yu, Boseon, Shin, Beomju, Lee, Jungho, Lee, Seoho, Lee, Taikjin, "Localization in Urban Canyon: Machine Learning based Localization Using LTE or LoRa Signal for ‘GNSS-denied’ Areas," Proceedings of the 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017), Portland, Oregon, September 2017, pp. 456-462.
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Abstract: Primary goal of this paper is to improve accuracies of fingerprint-based localization systems by analyzing RSS data using machine learning techniques. As we know, generating and managing fingerprint database is quite costly and time-consuming. However, to the best of our knowledge, there are no means to estimate qualities of fingerprint databases. Considering that the localization accuracies highly depends on the quality of fingerprint database, providing such means has an huge impact on improving localization accuracies. In this paper, to estimate qualities of fingerprint database, we employ unsupervised learning to observe how reference positions with similar RSS vectors deploys in the interested area and show how the deployment varies as learning more and more RSS data. The result of unsupervised learning allows partitioning the fingerprint database and with the partitions, we are able to achieve more accurate localization. In addition, we employ Naïve-Bayes classification for selecting partitions which is employed for filtering out reference positions that increase location ambiguities. Finally, we propose ‘pattern matching’-based localization that is originated from regression analysis on RSS data in each partition.