Availability of data and materials
Due to confidentiality agreements, supporting data can only be made available to bona fide researchers subject to a non-disclosure agreement. Details of the data and how to request access please contact corresponding author
Competing interests
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Funding
This research was financed by the World Class Professor 2019 program by the Indonesian government and supported by JSPS KAKENHI Grant Number JP20K04120.
Authors' contributions
Mokhamad Nur Cahyadi: Conceptualization, Methodology, Formal analysis, Writing - review & editing, Investigation, Supervision.
Ririn Wuri Rahayu: Writing - original draft, Methodology, Formal analysis.
Eko Yuli Handoko: Formal analysis, Investigation
Kosuke Heki: Conceptualization, Methodology, Formal analysis, Writing - review & editing, Supervision.
Acknowledgements
We thank to reviewers for constructive reviews. This research was supported by the World Class Professor 2019 program by the Indonesian government, and by JSPS KAKENHI Grant Number JP20K04120.
Authors' information
Mokhamad Nur Cahyadi received the M.Sc. degree in Geomatics Engineering from Stuttgart University Germany in 2010, and the Ph.D degree in Natural History Sciences Laboratory from Hokkaido University, Japan in 2014. He is currently lecturer and researcher at Geomatics Engineering, Sepuluh Nopember Institute of Technology, Indonesia. His research interest includes developing Low-cost GPS, Navigation, and Ionospheric disturbance (TEC). He is currently supervising four master students and working on the project of ionospheric anomaly detection after earthquake.
Eko Yuli Handoko received the S.T. and M.T. degree in Geodesy engineering from the Bandung Institute of Technology, Indonesia, in 1998 and 2003 respectively, and the Dr. degree in surveying engineering from Universidade do Porto, Portugal in 2011. He is currently a Lecturer with the Department of Geomatics Engineering at Sepuluh Nopember Institute of Technology, Indonesia. His research focuses on Geodesy, GNSS meteorology, Sea Level Rise, Satellite Altimetry.
Ririn Wuri Rahayu received the S.T degree in Geomatics engineering from Sepuluh Nopember Institute of Technology, Indonesia in 2018. Her undegraduated thesis is focused on the effect of ionospheric correction on the results of single frequency gps coordinates using the klobuchar model. She is curently a master student at the same department and institute as S.T degree. Her recently research interest includes TEC anomaly detection after volcano and eartquake event.
Kosuke Heki is currently a Professor of Department of Earth and Planetary Sciences, Earth and Planetary Dynamics, Hokkaido University, Japan. He is a researchers of space geodesy, which highly interested in GNSS (e.g. GPS). He use GNSS to measure short-term crustal movements such as coseismic jumps as well as long-term motions reflecting plate tectonics and slow earthquakes. Measurement of ionospheric total electron contents with GNSS offered hot topics, e.g. constraint of the orbits and powers of ballistic missiles, discovery of changes in ionosphere immediately before large earthquakes.