BackForwardInstrument:  SPER/1 

Instrument details
Acronym SPER/1
Full name Plasma and energy radiation spectrometer
Purpose SPE (Solar Proton Events)
Short description Description not available. Presumably, spectrometer for protons of energy in the range 10-100 MeV
Background Part of the instrument package carried by 4 satellites of the 5-satellite Ionozonde constellation
Scanning Technique Solar pointig from a constellation of 4 satellites in sunsynchronous orbit
Resolution N/A /full disk)
Coverage / Cycle Full solar disk, nearly continuous
Mass Power Data Rate


Providing Agency Roscosmos
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2024 to 2027
Last update: 2021-11-13
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
  • Proton sensor at LEO
Mission objectives
Primary mission objectives
  • Proton differential directional flux
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
Proton differential directional flux*4 - fairNo specific limitation.Sun pointing, high energy (over 1000 keV)