Emergency Warning Utilizing Next-Generation PPP-RTK Service

Yuki Sato, Norizumi Motooka, Seigo Fujita, Rui Hirokawa and Kenji Nakakuki, Maxim Keshin, Satoshi Ikari and Shin-ichi Nakasuka

Abstract:	We propose a next generation system that, in addition to standard PPP-RTK services, can also provide early warning information for natural disasters through synchronous monitoring of the ionosphere and troposphere. It makes it possible to build the interface required for monitoring rainband training as well as volcanic eruptions and tsunamis through high-accuracy estimation of tropospheric and ionospheric delay, respectively. The proposed approach comprises two processing stages: processing of a global network that estimates the satellite-induced error, and distributed estimation processing of atmospheric delay for local observation-station clusters wherefrom monitoring is conducted. This makes it possible to obtain more robust estimates of ionospheric and tropospheric delay, which are closer to the physical amounts, for abnormal occurrences in comparison with traditional local or regional PPP-RTK networks. As subsequent processing is self-contained, adding observation stations is simple and the monitored area can be easily extended in line with current needs using realistic computational resources.
Published in:	Proceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022) September 19 - 23, 2022 Hyatt Regency Denver Denver, Colorado
Pages:	3720 - 3730
Cite this article:	Sato, Yuki, Motooka, Norizumi, Fujita, Seigo, Hirokawa, Rui, Nakakuki, Kenji, Keshin, Maxim, Ikari, Satoshi, Nakasuka, Shin-ichi, "Emergency Warning Utilizing Next-Generation PPP-RTK Service," Proceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022), Denver, Colorado, September 2022, pp. 3720-3730. https://doi.org/10.33012/2022.18486
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