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Scientific Missions and Technologies of the ISSS on board the NEXTSat-1

  • Choi, Cheong Rim (Department of Physics, Korea Advanced Institute of Science and Technology) ;
  • Sohn, Jongdae (Department of Astronomy and Space Science, Chungnam National University) ;
  • Lee, Jun-Chan (Department of Physics, Korea Advanced Institute of Science and Technology) ;
  • Seo, Yong Myung (School of Space Research, Kyung Hee University) ;
  • Kang, Suk-Bin (Department of Physics, Korea Advanced Institute of Science and Technology) ;
  • Ham, Jongwook (Department of Physics, Korea Advanced Institute of Science and Technology) ;
  • Min, Kyoung-Wook (Department of Physics, Korea Advanced Institute of Science and Technology) ;
  • Seon, Jongho (School of Space Research, Kyung Hee University) ;
  • Yi, Yu (Department of Astronomy and Space Science, Chungnam National University) ;
  • Chae, Jang-Soo (Satellite Technology Research Center, Korea Advanced Institute of Science and Technology) ;
  • Shin, Goo-Hwan (Satellite Technology Research Center, Korea Advanced Institute of Science and Technology)
  • Received : 2013.12.30
  • Accepted : 2014.01.14
  • Published : 2014.03.15

Abstract

A package of space science instruments, dubbed the Instruments for the Study of Space Storms (ISSS), is proposed for the Next Generation Small Satellite-1 (NEXTSat-1), which is scheduled for launch in May 2016. This paper describes the instrument designs and science missions of the ISSS. The ISSS configuration in NEXTSat-1 is as follows: the space radiation monitoring instruments consist of medium energy particle detector (MEPD) and high energy particle detector (HEPD); the space plasma instruments consist of a Langmuir probe (LP), a retarding potential analyzer (RPA), and an ion drift meter (IDM). The space radiation monitoring instruments (MEPD and HEPD) measure electrons and protons in parallel and perpendicular directions to the geomagnetic field in the sub-auroral region, and they have a minimum time resolution of 50 msec for locating the region of the particle interactions with whistler mode waves and electromagnetic ion cyclotron (EMIC) waves. The MEPD measures electrons and protons with energies of tens of keV to ~400 keV, and the HEPD measures electrons with energies of ~100 keV to > ~1 MeV and protons with energies of ~10 MeV. The space plasma instruments (LP, RPA, and IDM) observe irregularities in the low altitude ionosphere, and the results will be compared with the scintillations of the GPS signals. In particular, the LP is designed to have a sampling rate of 50 Hz in order to detect these small-scale irregularities.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea

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