BackForwardInstrument:  SESS/SSJ5  

Instrument details
Acronym SESS/SSJ5
Full name SESS / Special Sensor Precipitating Electron and Ion Spectrometer
Purpose Measurement of transfer energy, mass, and momentum of charged particles through the magnetosphere-ionosphere in the Earth's magnetic field
Short description Electrostatic analyzer for electron, protons and alpha-particles in the energy range 0.03-30 keV
Background Part of the SESS (Space Environment Sensor Suite) package. Follow-on of SEM/SSJ4 flown on previous DMSP satellites
Scanning Technique N/A (in-situ in the platform environment)
Resolution N/A
Coverage / Cycle N/A
Mass Power Data Rate

 

Providing Agency DoD
Instrument Maturity Flown on operational programme
Utilization Period: 2003-11-20 to ≥2025
Last update: 2016-10-01
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
  • 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, low-energy only
Proton differential directional flux5 - marginalNo specific limitation.Platform environment, low-energy only
Alpha particles differential directional flux5 - marginalNo specific limitation.Platform environment, low-energy only