Volume 42 Issue 5
Oct.  2022
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LU Li, YU Qinglong, ZHOU Ping, JIA Shuai, CHANG Yuan. Simulation of ENA Imaging Measurements on a Geosynchronous Orbit. Chinese Journal of Space Science, 2022, 42(5): 884-890 doi: 10.11728/cjss2022.05.210414051
Citation: LU Li, YU Qinglong, ZHOU Ping, JIA Shuai, CHANG Yuan. Simulation of ENA Imaging Measurements on a Geosynchronous Orbit. Chinese Journal of Space Science, 2022, 42(5): 884-890 doi: 10.11728/cjss2022.05.210414051

Simulation of ENA Imaging Measurements on a Geosynchronous Orbit

doi: 10.11728/cjss2022.05.210414051
Funds:  Supported by National Key R&D Program of China (2020YFE0202100), National Mission/Other National Mission: Research on Key Technologies of the Outer Heliospheric Space Exploration System (Y91 Z100102) and National Mission/National Major Science and Technology Project: CE-7 Relay Satellite Display Neutral Atom Imager (E16504 B31 S)
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  • Author Bio:

    E-mail: luli@nssc.ac.cn

  • Received Date: 2021-04-14
  • Accepted Date: 2021-08-10
  • Rev Recd Date: 2022-01-05
  • Available Online: 2022-09-06
  • Geosynchronous orbit is located in the ring current region, where the energetic particle emission environment challenges the ion deflection design limit of the Energetic Neutral Atom (ENA) imager. Therefore, there is no measurement record of ENA imaging in this area before. On the basis of possessing the patent of high-energy ion deflection technology, ENA imaging under different Kp index in geosynchronous orbit is simulated. The simulation images show the characteristics of low-altitude ENA emission source and the rough sketch of magnetosphere. Due to the north-south conjugation observation of geosynchronous orbit, the simulated ENA images at different positions all have north-south symmetry. Aiming at the unsolved problems, such as the input source of ring current energetic ions during geomagnetic activities and its evolution process, we analyzed the possible results of ENA imaging combined with in-situ particle measurements in the same satellite, as well as the subversion effect of any north-south asymmetry of ENA map on the inversion model.

     

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