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Total Electron Content Observations by Dense Regional and Worldwide International Networks of GNSS

Two-dimensional ionospheric total electron content (TEC) maps have been derived from ground-based Global Navigation Satellite System (GNSS) receiver networks and applied to studies of various ionospheric disturbances since the mid-1990s. For the purpose of monitoring and researching ionospheric cond...

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Main Authors: Tsugawa, Takuya, Nishioka, Michi, Ishii, Mamoru, Hozumi, Kornyanat, Saito, Susumu, Shinbori, Atsuki, Otsuka, Yuichi, Saito, Akinori, M. Buhari, Suhaila, Abdullah, Mardina, Supnithi, Pornchai
Format: Article
Published: Fuji Technology Press 2018
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QA Mathematics
Online Access:http://eprints.utm.my/id/eprint/84876/
http://dx.doi.org/10.20965/jdr.2018.p0535
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spelling my.utm.848762020-02-29T12:39:54Z http://eprints.utm.my/id/eprint/84876/ Total Electron Content Observations by Dense Regional and Worldwide International Networks of GNSS Tsugawa, Takuya Nishioka, Michi Ishii, Mamoru Hozumi, Kornyanat Saito, Susumu Shinbori, Atsuki Otsuka, Yuichi Saito, Akinori M. Buhari, Suhaila Abdullah, Mardina Supnithi, Pornchai QA Mathematics Two-dimensional ionospheric total electron content (TEC) maps have been derived from ground-based Global Navigation Satellite System (GNSS) receiver networks and applied to studies of various ionospheric disturbances since the mid-1990s. For the purpose of monitoring and researching ionospheric conditions and ionospheric space weather phenomena, we have developed TEC maps of areas over Japan using the dense GNSS network, GNSS Earth Observation NETwork (GEONET), which consists of about 1300 stations and is operated by the Geospatial Information Authority of Japan (GSI). Currently, we are providing high-resolution, two-dimensional maps of absolute TEC, detrended TEC, rate of TEC change index (ROTI), and loss-of-lock on GPS signal over Japan on a real-time basis. Such high-resolution TEC maps using dense GNSS receiver networks are one of the most effective ways to observe, on a scale of several 100 km to 1000 km, ionospheric variations caused by traveling ionospheric disturbances and/or equatorial plasma bubbles, which can degrade single-frequency and differential GNSS positioning/navigation. We have collected all the available GNSS receiver data in the world to expand the TEC observation area. Currently, however, dense GNSS receiver networks are available in only limited areas, such as Japan, North America, and Europe. To expand the two-dimensional TEC observation with high resolution, we have conducted the Dense Regional and Worldwide International GNSS TEC observation (DRAWING-TEC) project, which is engaged in three activities: (1) standardizing GNSS-TEC data, (2) developing a new high-resolution TEC mapping technique, and (3) sharing the standardized TEC data or the information of GNSS receiver network. We have developed a new standardized TEC format, GNSS-TEC EXchange (GTEX), which is included in the Formatted Tables of ITU-R SG 3 Data-banks related to Recommendation ITU-R P.311. Sharing the GTEX TEC data would be easier than sharing the GPS/GNSS data among those in the international ionospheric researcher community. The DRAWING-TEC project would promote studies of medium-scale ionospheric variations and their effect on GNSS. Fuji Technology Press 2018-06 Article PeerReviewed Tsugawa, Takuya and Nishioka, Michi and Ishii, Mamoru and Hozumi, Kornyanat and Saito, Susumu and Shinbori, Atsuki and Otsuka, Yuichi and Saito, Akinori and M. Buhari, Suhaila and Abdullah, Mardina and Supnithi, Pornchai (2018) Total Electron Content Observations by Dense Regional and Worldwide International Networks of GNSS. Journal of Disaster Research, 13 (3). pp. 535-545. ISSN 1881-2473 http://dx.doi.org/10.20965/jdr.2018.p0535
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic QA Mathematics
spellingShingle QA Mathematics
Tsugawa, Takuya
Nishioka, Michi
Ishii, Mamoru
Hozumi, Kornyanat
Saito, Susumu
Shinbori, Atsuki
Otsuka, Yuichi
Saito, Akinori
M. Buhari, Suhaila
Abdullah, Mardina
Supnithi, Pornchai
Total Electron Content Observations by Dense Regional and Worldwide International Networks of GNSS
description Two-dimensional ionospheric total electron content (TEC) maps have been derived from ground-based Global Navigation Satellite System (GNSS) receiver networks and applied to studies of various ionospheric disturbances since the mid-1990s. For the purpose of monitoring and researching ionospheric conditions and ionospheric space weather phenomena, we have developed TEC maps of areas over Japan using the dense GNSS network, GNSS Earth Observation NETwork (GEONET), which consists of about 1300 stations and is operated by the Geospatial Information Authority of Japan (GSI). Currently, we are providing high-resolution, two-dimensional maps of absolute TEC, detrended TEC, rate of TEC change index (ROTI), and loss-of-lock on GPS signal over Japan on a real-time basis. Such high-resolution TEC maps using dense GNSS receiver networks are one of the most effective ways to observe, on a scale of several 100 km to 1000 km, ionospheric variations caused by traveling ionospheric disturbances and/or equatorial plasma bubbles, which can degrade single-frequency and differential GNSS positioning/navigation. We have collected all the available GNSS receiver data in the world to expand the TEC observation area. Currently, however, dense GNSS receiver networks are available in only limited areas, such as Japan, North America, and Europe. To expand the two-dimensional TEC observation with high resolution, we have conducted the Dense Regional and Worldwide International GNSS TEC observation (DRAWING-TEC) project, which is engaged in three activities: (1) standardizing GNSS-TEC data, (2) developing a new high-resolution TEC mapping technique, and (3) sharing the standardized TEC data or the information of GNSS receiver network. We have developed a new standardized TEC format, GNSS-TEC EXchange (GTEX), which is included in the Formatted Tables of ITU-R SG 3 Data-banks related to Recommendation ITU-R P.311. Sharing the GTEX TEC data would be easier than sharing the GPS/GNSS data among those in the international ionospheric researcher community. The DRAWING-TEC project would promote studies of medium-scale ionospheric variations and their effect on GNSS.
format Article
author Tsugawa, Takuya
Nishioka, Michi
Ishii, Mamoru
Hozumi, Kornyanat
Saito, Susumu
Shinbori, Atsuki
Otsuka, Yuichi
Saito, Akinori
M. Buhari, Suhaila
Abdullah, Mardina
Supnithi, Pornchai
author_facet Tsugawa, Takuya
Nishioka, Michi
Ishii, Mamoru
Hozumi, Kornyanat
Saito, Susumu
Shinbori, Atsuki
Otsuka, Yuichi
Saito, Akinori
M. Buhari, Suhaila
Abdullah, Mardina
Supnithi, Pornchai
author_sort Tsugawa, Takuya
title Total Electron Content Observations by Dense Regional and Worldwide International Networks of GNSS
title_short Total Electron Content Observations by Dense Regional and Worldwide International Networks of GNSS
title_full Total Electron Content Observations by Dense Regional and Worldwide International Networks of GNSS
title_fullStr Total Electron Content Observations by Dense Regional and Worldwide International Networks of GNSS
title_full_unstemmed Total Electron Content Observations by Dense Regional and Worldwide International Networks of GNSS
title_sort total electron content observations by dense regional and worldwide international networks of gnss
publisher Fuji Technology Press
publishDate 2018
url http://eprints.utm.my/id/eprint/84876/
http://dx.doi.org/10.20965/jdr.2018.p0535
_version_ 1662754320127361024
score 13.211869

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