| Project/Area Number |
26630182
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Measurement engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
齊藤 昭則 京都大学, 理学研究科, 准教授 (10311739)
齋藤 享 国立研究開発法人海上・港湾・航空技術研究所, 電子航法研究所, 研究員 (40392716)
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| Research Collaborator |
CHEN CHIA-HUNG National Cheng-Kung University, 理学部, 助教
SEEMALA GOPI Indian Institute of Geomagnetism, 研究員
SSESSANGA NICHOLAS Chungnam National University, Space Science Laboratory, 研究員
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 電離圏電子数 / ３次元トモグラフィー / 電離圏構造 / GPS観測網 / リアルタイムモニタ / 電離圏全電子数 / 3次元トモグラフィー |
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| Outline of Final Research Achievements |
The purpose of this study is to sophisticate three-dimensional tomographic analysis of ionospheric electron density over Japan using GEONET GPS information network by Geographical Survey Institute. From four years of research, 1) We developed a three-dimensional tomographic analysis program using constrained least-squares fitting method, and succeeded in automating the estimation of the TEC absolute value to the final tomography results, 2) We utilized one-second GPS-TEC data from 200 receiving stations acquired by the Electronic Navigation Research Institute, and realized real-time data service of the three-dimensional tomography at every 15 minutes with latency of 5 minutes, 3) We constructed a software system for the GEONET past data analysis, and 4) We carried out statistical comparison between tomographic analysis results and other observation data.
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