• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Study on the use of optical electric field sensors for the measurement in space

Research Project

Project/Area Number 16K13886
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Space and upper atmospheric physics
Research InstitutionKyoto University

Principal Investigator

Hirotsugu Kojima  京都大学, 生存圏研究所, 教授 (10215254)

Research Collaborator Usui Hideyuki  
Imachi Tomohiko  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords光電界センサー / 宇宙電磁環境 / プラズマ波動 / 電界観測 / 科学衛星 / 宇宙プラズマ / 電界 / 小型軽量センサー / 光電界センサ- / 超小型衛星 / スペースポテンシャル / 波動粒子相互作用
Outline of Final Research Achievements

Optical electric field sensors are noninvasive sensors. They are commonly used in ground tests. The present research focuses on the use of the optical electric field sensors with top-hat antenna elements on board scientific satellites for observing electric fields of plasma waves in space. The noninvasive feature of the sensor is also the significant advantage for plasma wave measurements in space,. The present research succeeded in showing that the sensitivity of the optical electric field sensors is enough to observe plasma waves with moderate intensities. However, since the sensitivity of the optical electric field sensor is worse than the sensitivity of conventional electric field sensors on board scientific satellites, further improvements should be expected in the use for space science missions. The present research also showed the optical electric field sensors have the immunity for external conductive noise emissions.

Academic Significance and Societal Importance of the Research Achievements

光電界センサーは非侵襲型のセンサーとして、地上において既に利用されているが、衛星に搭載して宇宙空間で利用することを想定した評価は存在しなかった。本研究により、光電界センサーの宇宙空間での利用に対するポテンシャルを示すことができた意義は大きい。感度的にはまだ不足しているものの、ノイズに対する耐性が非常に強いことは科学観測において非常に重要な特徴であり、将来の衛星観測において、衛星からのノイズや擾乱の影響を受けずに高精度で電界を観測できるシステムが光電界センサーで実現できる可能性が開けた。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (2 results)

All 2018 2016

All Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Can we use an optical electric field sensor in space missions to investigate space environments ?2018

    • Author(s)
      Hirotsugu Kojima
    • Organizer
      Progress in electromagnetics research symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 超小型プラズマ波動観測装置開発の現状と装置活用したサイエンス2016

    • Author(s)
      小嶋浩嗣
    • Organizer
      磁気圏・電離圏シンポジウム
    • Place of Presentation
      相模原市
    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi