BackForwardInstrument:  SEM/TED 

Instrument details
Acronym SEM/TED
Full name SEM / Total Energy Detector
Purpose To measures proton and electron fluxes at platform level
Short description Eight electrostatic analyzers and pulse height discriminators operating in two ranges: 0.05-1 keV and 1-20 keV, each measurement independently for electrons and protons.
Background Part of the packages named SEM (Space Environment Monitor) until NOAA-14, and SEM/2 (Space Environment Monitor - 2) from NOAA-15 onward and on MetOp
Scanning Technique N/A (in-situ measurement in the platform environment)
Resolution N/A
Coverage / Cycle N/A
Mass Power Data Rate

 

Providing Agency NOAA
Instrument Maturity Flown on operational programme
Utilization Period: 1979 to ≥2018
Last update: 2017-06-04
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
Mission objectives
Primary mission objectives
  • 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, low energy (up to 40 keV)
Proton differential directional flux5 - marginalNo specific limitation.Platform environment, low energy (up to 40 keV)