TY - GEN
T1 - Ionosphere monitoring and GNSS correction by a real-Time ionospheric tomography system in Japan
AU - Saito, Susumu
AU - Yamamoto, Mamoru
AU - Chen, Chia Hun
AU - Saito, Akinori
N1 - Funding Information:
This work is supported by JSPS Grant-in-Aid for Challenging Exploratory Research JP26630182. The ionosonde data are provided by National Institute of Information and Communication Technology, Japan. Magnetic activity index (Kp) was provided by World Data Center for Geomagnetism Kyoto.
Publisher Copyright:
© 2017 Institute of Navigation. All rights reserved.
PY - 2017
Y1 - 2017
N2 - 3-D ionospheric tomography by using measurements of ground GNSS networks is a powerful tool to investigate ionospheric behavior. Recently, a real-Time 3-D ionosphere tomography system has been developed [1] to reconstruct 3-D ionospheric density profiles over Japan. 3-D ionospheric density profiles over Japan estimated by a real-Time 3-D tomography system, which is available from March 2016 were used to generate ionospheric correction for single-frequency stand-Alone positioning. On both magnetic quiet and disturbed days (14 November 2017 and 25 October 2017, respectively), stand-Alone positioning corrected by real-Time tomography resulted in mean vertical errors equivalent to those of dual-frequency positioning. The RMS vertical errors of stand-Alone positioning corrected by real-Time tomography were better than those of dual-frequency positioning and equivalent to those of uncorrected single-frequency positioning. More analysis on data sets at different location, in different seasons, and in different magnetic conditions are planned. Although there is no specific plan, it is also interesting to apply the same method to other locations where GNSS receiver networks with the similar receiver density as used in this study.
AB - 3-D ionospheric tomography by using measurements of ground GNSS networks is a powerful tool to investigate ionospheric behavior. Recently, a real-Time 3-D ionosphere tomography system has been developed [1] to reconstruct 3-D ionospheric density profiles over Japan. 3-D ionospheric density profiles over Japan estimated by a real-Time 3-D tomography system, which is available from March 2016 were used to generate ionospheric correction for single-frequency stand-Alone positioning. On both magnetic quiet and disturbed days (14 November 2017 and 25 October 2017, respectively), stand-Alone positioning corrected by real-Time tomography resulted in mean vertical errors equivalent to those of dual-frequency positioning. The RMS vertical errors of stand-Alone positioning corrected by real-Time tomography were better than those of dual-frequency positioning and equivalent to those of uncorrected single-frequency positioning. More analysis on data sets at different location, in different seasons, and in different magnetic conditions are planned. Although there is no specific plan, it is also interesting to apply the same method to other locations where GNSS receiver networks with the similar receiver density as used in this study.
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U2 - 10.33012/2017.15262
DO - 10.33012/2017.15262
M3 - Conference contribution
AN - SCOPUS:85047856229
T3 - 30th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2017
SP - 3434
EP - 3440
BT - 30th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2017
PB - Institute of Navigation
T2 - 30th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2017
Y2 - 25 September 2017 through 29 September 2017
ER -