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Prediction of ionospheric disturbance generation for improving GNSS positioning accuracy: Multi-scale observations

Research Project

Project/Area Number 20K14544
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 17010:Space and planetary sciences-related
Research InstitutionNational Institute of Maritime, Port and Aviation Technology

Principal Investigator

Takahashi Toru  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, 主任研究員 (40759833)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords電離圏擾乱 / ビーコン観測 / 観測ロケット / 衛星測位 / ビーコン / シンチレーション / トモグラフィ / 衛星ビーコン / マルチスケール観測 / プラズマバブル / オーロラ / GNSS / VHFシンチレーション / スピッツベルゲン島 / 電離圏
Outline of Research at the Start

電離圏内の電子密度の粗密構造が、数 mから数 kmの様々なスケールで急激に発達する電離圏擾乱と呼ばれる現象が全地球的に発生する。特に、100 mスケールの電離圏擾乱は衛星測位(GPSなど)に最大で45 mの誤差を与える。近年、100 mスケールの電離圏擾乱は、より大きい1 kmスケールの電離圏擾乱が崩壊していく過程で発生している可能性が示唆された。本研究では、VHF帯の衛星電波を使った1 km スケールの電離圏擾乱の観測と、既存の装置と併せ用いることで10 mから1 kmのスケール電離圏擾乱を同時に観測するマルチスケール観測を実施する。これにより、電離圏擾乱の発生メカニズムを明らかにする。

Outline of Final Research Achievements

We developed a beacon signal receiver based on the Software Defined Radio (SDR) to observe the 1 km-scale ionospheric disturbances. This receiver has been installed in Kirishima, Kagoshima. The sounding rocket S-520-32, which aimed to observe irregularities associated with the sporadic E (Es) layer, was launched from Uchinoura Space Center, JAXA, at 23:20:00 JST on 11 August 2022. It transmitted the dual-band beacon signals (150 and 400 MHz). We installed the beacon receivers at Uchinoura, Tarumizu, Kirishima, and Satsumasendai to derive the horizontal structure of the Es layer by means of the tomography technique. The represented horizontal structure of the Es layer was well consistent with the ground-based and in-situ observation. We will compare the horizontal structure of the Es layer and the ionospheric disturbances in the F-region to discuss the E-F coupling process.

Academic Significance and Societal Importance of the Research Achievements

これまで、数100 mスケールの電離圏擾乱によるGNSS信号の振幅及び位相の揺らぎを観測することで、電離圏擾乱の研究が進められてきた。本研究ではこれより大きいkmスケールの電離圏擾乱の観測が可能なビーコン受信機を作成し、実際に観測を始めたことや、ロケット観測キャンペーンに参加した。これにより複数のスケールの電離圏擾乱を観測できる下地を確立したことは、様々なスケールで出現する電離圏擾乱の生成メカニズムの解明に貢献したものと考えられる。
また、本観測を継続することでGNSS信号に揺らぎを与える電離圏擾乱の発生が予測できれば、衛星測位の精度及び信頼性の向上が見込まれ、その社会的意義は大きい。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (35 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (4 results) Journal Article (6 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (25 results) (of which Int'l Joint Research: 15 results)

  • [Int'l Joint Research] オスロ大学/トロムソ大学(ノルウェー)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Oslo/The Arctic University of Norway(ノルウェー)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University of Oslo/The University Centre in Svalbard/The Arctic University of Norway(ノルウェー)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] NASA/Dartmouth College(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] A statistical study of convective and dynamic instabilities in the polar upper mesosphere above Troms?2023

    • Author(s)
      Nozawa Satonori、Saito Norihito、Kawahara Takuya、Wada Satoshi、Tsuda Takuo T.、Maeda Sakiho、Takahashi Toru、Fujiwara Hitoshi、Narayanan Viswanathan Lakshmi、Kawabata Tetsuya、Johnsen Magnar G.
    • Journal Title

      Earth, Planets and Space

      Volume: 75 Issue: 1 Pages: 22-22

    • DOI

      10.1186/s40623-023-01771-1

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Electron?neutral collisions effects on Langmuir probe in the lower E-region ionosphere2022

    • Author(s)
      Brask S. M.、Marholm S.、Di Mare F.、Adhikari S.、Spicher A.、Takahashi T.、Miloch W. J.
    • Journal Title

      Physics of Plasmas

      Volume: 29 Issue: 3 Pages: 033511-033511

    • DOI

      10.1063/5.0079761

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Performance of DFMC SBAS broadcasted from Japanese QZSS in Oslo, Norway2022

    • Author(s)
      Takahashi Toru、Saito Susumu、Kitamura Mitsunori、Sakai Takeyasu
    • Journal Title

      Proceedings of the 2022 International Technical Meeting of The Institute of Navigation

      Volume: - Pages: 401-406

    • DOI

      10.33012/2022.18239

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Suppression of Ionospheric Irregularity Due to Auroral Particle Impact2021

    • Author(s)
      Takahashi Toru、Spicher Andres、Di Mare Francesca、Rowland Douglas E.、Pfaff Robert F.、Collier Michael R.、Clausen Lasse Boy Novock、Moen Joran Idar
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 127 Issue: 1

    • DOI

      10.1029/2020ja028725

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Formation of a bottomside secondary sodium layer associated with the passage of multiple mesospheric frontal systems2021

    • Author(s)
      Viswanathan Lakshmi Narayanan, Satanori Nozawa, Shin-Ichiro Oyama, Ingrid Mann, Kazuo Shiokawa, Yuichi Otsuka, Norihito Saito, Satoshi Wada, Takuya D. Kawahara, Toru Takahashi
    • Journal Title

      Atmospheric Chemistry and Physics

      Volume: 21 Pages: 2343-2361

    • DOI

      10.5194/acp-2020-803

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Cusp as a VLF Saucer Source: First Rocket Observations of Long-Duration VLF Saucers on the Dayside2021

    • Author(s)
      Moser, C., J. LaBelle, S. Hatch, J. I. Moen, A. Spicher, T. Takahashi, C. A. Kletzing, S. Bounds, K. Oksavik, F. Sigernes, and T. K. Yeoman
    • Journal Title

      Geophysical Research Letters

      Volume: 48 Issue: 2

    • DOI

      10.1029/2020gl090747

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 観測ロケット S-520-32から送信されたDual-Band Beacon によるEs層のトモグラフィ解析2024

    • Author(s)
      高橋 透, 斎藤 享, 山本 衛, 熊本 篤志, 篠原 学
    • Organizer
      第6回観測ロケットシンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] E region irregularities observed by dual band beacon from the sounding rocket S-520-322023

    • Author(s)
      Toru Takahashi, Susumu Saito, Mamoru Yamamoto
    • Organizer
      URSI GASS 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Tomographic imaging of sporadic E-layer by sounding rocket S-520-32 observation,2023

    • Author(s)
      Toru Takahashi, Susumu Saito, Mamoru Yamamoto, and Manabu Shinohara
    • Organizer
      地球電磁気・地球惑星圏学会 2023年秋季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Observation of irregularities in sporadic-E layer by dual band beacon from the sounding rocket S-520-322023

    • Author(s)
      Toru Takahashi, Susumu Saito, Mamoru Yamamoto, and Manabu Shinohara
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Examining the relevance of different instability mechanisms in causing ionospheric cusp irregularities based on sounding rocket data and numerical simulations2023

    • Author(s)
      A. Spicher, A. Kvammen, J. LaBelle, M. Zettergren, J. W. Bonnell, R. Roglans, C. Moser, S. A. Fuselier, S. Bounds, L. B. N. Clausen, F. Di Mare, C. A. Feltman, Y. Jin, C. Kletzing, W. J. Miloch, J. I. Moen, K. Oksavik, R. Sawyer, T. Takahashi, T. K. Yeoman
    • Organizer
      URSI GASS 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observations of sporadic E using aeronautical navigation radio waves2023

    • Author(s)
      Keisuke Hosokawa, Susumu Saito, Ichiro Tomizawa, Toru Takahashi, Michi Nishioka, Takuya Tsugawa, Mamoru Ishii, Akinori Saito, Manabu Shinohara
    • Organizer
      URSI GASS 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] VHF to UHF scintillation by using beacon and NOAA signals2022

    • Author(s)
      Toru Takahashi, Susumu Saito, Mamoru Yamamoto
    • Organizer
      16th International Symposium on Equatorial Aeronomy
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] bservation of ionospheric irregularity by using scintillation of beacon and NOAA satellite signals2022

    • Author(s)
      Toru Takahashi, Susumu Saito
    • Organizer
      JpGU 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] VHF to UHF scintillation by using satellite and rocket beacon signals2022

    • Author(s)
      Toru Takahashi, Susumu Saito, Mamoru Yamamoto, and Manabu Shinohara
    • Organizer
      第152回地球電磁気・地球惑星圏学会
    • Related Report
      2022 Research-status Report
  • [Presentation] DFMC SBAS メッセージの相互検証2022

    • Author(s)
      高橋 透, 北村光教, 小田浩幸, 坂井丈泰
    • Organizer
      第66回宇宙科学技術連合講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] he 10-year summary of the sodium lidar at Tromso and its future plan2022

    • Author(s)
      S. Nozawa, T. D. Kawahara, N. Saito, T. T. Tsuda, S. Wada, M. Tsutsumi, T. Takahashi, T. Kawabata, Y. Ogawa, H. Fujiwara, S. Suzuki, M. G. Johnsen, and A. Brekke
    • Organizer
      Seventh International Symposium on Arctic Research
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Unusual ionospheric disturbances and irregularities following the eruption of Hunga Tonga-Hunga Ha’apai2022

    • Author(s)
      Susumu Saito, Takayuki Yoshihara, and Toru Takahashi
    • Organizer
      16th International Symposium on Equatorial Aeronomy
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Monitoring of Equatorial Plasma Bubbles Using Aeronautical Navigation System2022

    • Author(s)
      Keisuke Hosokawa, Susumu Saito, Hiroyuki Nakata, Charles Lin, Jia- Ting Lin, Pornchai Supnithi, Ichiro Tomizawa, Jun Sakai, Toru Takahashi
    • Organizer
      16th International Symposium on Equatorial Aeronomy
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ionospheric irregularities and scintillations during the geomagnetic storm on 15 January 20222022

    • Author(s)
      Susumu Saito, Takayuki Yoshihara, and Toru Takahashi
    • Organizer
      JpGU 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Observation of Es Layer Substructure Using ILS Far-Field Propagation Wave for Aeronautical Navigation2022

    • Author(s)
      Shumpei Tabuchi, Keisuke Hosokawa, Susumu Saito, Jun Sakai, Ichiro Tomizawa, Toru Takahashi, and Hiroyuki Nakata
    • Organizer
      JpGU 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 航空航法用 ILS 長距離伝搬波 を用いた Es 下部構造の観測2022

    • Author(s)
      田淵駿平, 細川敬祐, 斎藤享, 坂井純, 冨澤一郎, 高橋透, 中田裕之
    • Organizer
      地球電磁気・地球惑星圏学会第152回講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Impacts on GNSS by ionospheric irregularities observed over Japan on 15 January 20222022

    • Author(s)
      斎藤 享, 吉原貴之, 高橋透
    • Organizer
      地球電磁気・地球惑星圏学会第152回講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] 観測ロケットS-520-32号機と自前開発機器によるロケット-地上間の電離圏全電子数観測2022

    • Author(s)
      山本衛, 高橋透, 芦原佑樹
    • Organizer
      地球電磁気・地球惑星圏学会第152回講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Performance of DFMC SBAS Broadcasted from Japanese QZSS in Oslo, Norway2022

    • Author(s)
      Toru Takahashi, Susumu Saito, Mitsunori Kitamura, and Takeyasu Sakai
    • Organizer
      ION ITM 2022
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Decay of ionospheric irregularity due to auroral particle impact2021

    • Author(s)
      Toru Takahashi, Andres Spicher, Francesca Di Mare, Douglas E. Rowland, Robert F Pfaff Jr., Lasse Boy Novock Clausen and Joran Moen
    • Organizer
      JpGU 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Observation of ionospheric irregularity by using scintillation of VHF to UHF satellite signals2021

    • Author(s)
      高橋 透, 斎藤 享
    • Organizer
      地球電磁気・地球惑星圏学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 衛星ビーコン観測によるスポラディックE層の構造の研究2021

    • Author(s)
      高橋 透, 斎藤 享
    • Organizer
      第15回MUレーダー・赤道大気レーダーシンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] Study of 8 hr and 6 hr atmospheric waves in the polar upper mesosphere and lower thermosphere by using sodium LIDAR data2021

    • Author(s)
      Chiaki Morikawa, Satonori Nozawa, Takuo Tsuda, Takuya Kawahara, Norihito Saito, Satoshi Wada, Toru Takahashi, Tetsuya Kawabata, and Hall Chris
    • Organizer
      JpGU 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Atmospheric instabilities in the polar upper mesosphere2021

    • Author(s)
      Satonori Nozawa, Sakiho Maeda, Takuya Kawahara, Norihito Saito, Satoshi Wada, Takuo Tsuda, and Toru Takahashi
    • Organizer
      JpGU 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Decay ionospheric irregularity correlate with the green line auroral emission enhancement2020

    • Author(s)
      Toru Takahashi, Andres Spicher, Francesca Di Mare, Douglas E. Rowland, Robert F Pfaff Jr., Lasse Boy Novock Clausen and Joran Moen
    • Organizer
      AGU Fall Meeting 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2025-01-30  

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