BackForwardInstrument:  PEM/EPS  

Instrument details
Acronym PEM/EPS
Full name Particle Environment Monitor / Energetic Particle Spectrometer
Purpose To monitor electrons and protons of medium and high energy
Short description Package of two spectrometers, one for medium energy electrons and protons (0.001-32 keV), one for high energy electrons (0.04-5 MeV) and protons (0.07-139 MeV)
Background Component of the UARS Particle Environment Monitor (PEM)
Scanning Technique Viewing the atmosphere and Space at 8 different directions, 5 towards Space, 3 towards Earth
Resolution N/A
Coverage / Cycle N/A
Mass Power Data Rate

 

Providing Agency NASA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1991 to 2005
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
  • Subcomponent 1
  • In-situ plasma probes, and energetic particle spectrometers and magnetometers at GEO and LEO, and magnetic field at GEO
  • Electron sensor at LEO
  • Proton sensor at LEO
Mission objectives
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
Note: * Primary mission objective.
VariableRelevance for measuring this variableOperational limitationsExplanation
Electron differential directional flux5 - marginalNo specific limitation.Platform environment, low, medium and high energy (up to over 400 keV)
Proton differential directional flux5 - marginalNo specific limitation.Platform environment, low, medium and high energy (up to over 1000 keV)