BackForwardInstrument:  SPS/HEPD 

Instrument details
Acronym SPS/HEPD
Full name Space Physics Sensor - High Energy Particle Detector
Purpose Space weather in the satellite environment
Short description Spectrometer for electrons (0.25-2.0 MeV), protons (6.4-38 MeV) and alpha-particles (15-60 MeV)
Background Part of the Space Physics Sensor package (SPS)
Scanning Technique N/A (in-situ measurement in the platform environment)
Resolution N/A
Coverage / Cycle N/A
Mass Power Data Rate


Providing Agency KARI
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2000 to 2001
Last update: 2017-06-05
Detailed characteristics
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Solar and space environment monitors
  • Energetic particle spectrometer
WIGOS Subcomponents No WIGOS subcomponents have been defined.
Mission objectives
Opportunity objectives
  • Alpha particles differential directional flux
  • Electron differential directional flux
  • Proton differential directional flux
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Tentative Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
VariableRelevance for measuring this variableOperational limitationsExplanation
Electron differential directional flux5 - marginalNo specific limitation.Platform environment, medium and high energy (over 40 to over 400 keV)
Proton differential directional flux5 - marginalNo specific limitation.Platform environment, high energy (over 1000 keV)
Alpha particles differential directional flux5 - marginalNo specific limitation.Platform environment. Low-medium energy range (<10 up to 100 MeV/n)