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Space Environment Measurements by JAXA Satellites and ISS

Space Environment Measurements by JAXA Satellites and ISS. Takahiro OBARA Space Environment Group Japan Aerospace Exploration Agency (JAXA). 1. 2. Space Environment Effects. CCDs noises. Surface degradation. Solar cell degradation. Electronics degradation. Electrostatic

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Space Environment Measurements by JAXA Satellites and ISS

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  1. Space Environment Measurements by JAXA Satellitesand ISS Takahiro OBARA Space Environment Group Japan Aerospace Exploration Agency (JAXA) 1

  2. 2

  3. Space Environment Effects CCDsnoises Surface degradation Solar cell degradation Electronics degradation Electrostatic Discharge Single Event Phantom commands 3

  4. Space Environment Effects 4

  5. Ｓｐａｃｅ　Ｅｎｖｉｒｏｎｍｅｎｔ　ＭｏｎｉｔｏｒｉｎｇＳｐａｃｅ　Ｅｎｖｉｒｏｎｍｅｎｔ　Ｍｏｎｉｔｏｒｉｎｇ 5

  6. Space environment measurement 6

  7. Radiation Measurements in JAXA MIN MAX MIN MAX MIN MAX MIN QZS1 E T S 6 DRTS ETS-5 M D S 1 ETS-8 E R G Jason-2 Jason-3 ADEOS ADEOS２ ALOS GOSAT ISS/JEM/SEDA-AP Space Environment Monitoring Radiation Belt Model RB Science 7 Warning Information

  8. Radiation Particle Measurement along GTO satellite MDS-1 (2002.2-2003.8) 8

  9. MDS-1 (TSUBASA) Measurement (Obara et al., 2005) 9

  10. MDS-1 (TSUBASA) Measurement (Obara et al., 2005) 10

  11. Seed Electron & plasma wave measurements (Kasahara et al., 2008) 11

  12. MDS-1 MeV electron vs. Akebono VLF MeV electron VLF waves (Obara et al., 2005) 12

  13. 2-step acceleration model Intensification of Plasma Waves ② ～keV Hot electrons ① 30～100 keV Seed electrons Wave growth plasma sheet Enhanced convection plasmaspause (Obara et al., 2001) 13

  14. Time evolution of ｆ(K) ｆ3000(K) ｆ0(K) (Omura et al., 2008) 14

  15. New Model Development NASA AE8 MODEL JAXA DYNAMIC MODEL 15

  16. Comparison with Obs. Data MDS-1 Observation JAXA DYNAMIC MODEL 16

  17. Radiation Particle Measurement at GEO satellites DRTS (2002.9- ) ETS-V (1987.8-1997.9 ) 17

  18. Seasonal Variation of MeV Electrons at GEO 18

  19. Seasonal Variation of MeV Electrons at GEO ETS-8 data (1988-1997) 19

  20. ETS-VMeV electron flux vs. SWsector structure rule ＳＰＲＩＮＧ -> Toward AUTUMN -> Away 20

  21. rule ＳＰＲＩＮＧ -> Toward AUTUMN -> Away 21

  22. Radiation Particle Measurement at LEO satellites and ISS GOSAT (2009.1- ) ISS/SEDA-AP (2009.7- ) Jason-2(CNES) (2008.6- ) 22

  23. JEM (Japanese Experimental Module)‏ Space Environment Data Acquisition Equipment (SEDA)‏ Exposed Facility Pressurized Module 23

  24. Observation at 400km altitude (Obara et al., 2010) 24

  25. AE8 Model at 400km altitude Significant movement ( or shift ) of intense region 25

  26. Jason-2 1336 km GOSAT 700 km ISS 400 km 26

  27. Dynamic Variation of Outer Belt Electron at LEO 27

  28. 30keV Electron Data : Jason-2 2010/1/1 - 2010/1/10 2010/4/1 - 2010/4/10 After Large Magnetic Storm on April 5, Large Increase of High Energy Electron Fluxtook place. 28

  29. Injections of 45 keV Electrons were found, which reached down to L=2.3~2.5 (Mlat ~ 50 degree ). This is VERY consistent with Jason-2 data. 29

  30. Simulation / model calculation 30~40 keV Electrons Due to the large convection E fioeld, enegetic electrons approach toward the Earth (Ebihara et al., 2010) 30

  31. Space Environment Measurement at QZSorbit QZS-1 (2010.9- ) QZS-1,2 and 3 31

  32. MAM-S1 POM-S MAM-S2 LPT QZS-1 satellite: TEchnical Data Acquisition Equipments (TEDA) TEDA consist of three parts; （1）Light Particle Telescope：LPT （2）MAgnetoMeter：MAM （3）POtential Monitor：POM With these data, JAXA will identify the cause of the satellite anomaly. 32

  33. 0.1MeV 0.8MeV １ Day QZS-1 Covering Region -QZS-1 Orbit and Electron Flux- over Japan 33

  34. QZS-1 satellite: Altitude： 32000~40000km Projection along the field line Launch; Sept.11, 2010 Line of force Map onto the Earth MAGDAS, SERC, Kyushu Univ. X Earth Radius 34

  35. Data service http://sees.tksc.jaxa.jp 35

  36. electron Space Environment & Effects System (SEES) Real Time Plots WWW Browser System 1. Measurement Data 18 observation data display. Offer to the inside and outside of JAXA 2. Warning mail system Warning notification: X rays, solar proton, and high energy electron 3. Satellite environmental model and analysis tool 90 kinds of space environmental models. Display of satellite environment in 2D and 3D. Observation Data Anik(Canada)E-1、E-2 trouble Useful Tools for Satellite Environment Reseach JAXA SEES URLhttp://sees.tksc.jaxa.jp

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