BackForwardInstrument:  SEP-fields 

Instrument details
Acronym SEP-fields
Full name Space Environment Package - fields
Purpose Space weather - Monitoring magnetic field, charge and dose at platform level
Short description Package of instruments including a Flux Gate Magnetometer (FGM), and radiation dosimeter and surface charging sensors. Dynamic range of FGM: ±0.01 to ±600 nT for each component, with resolution ±0.06 @ maximum of the dynamics
Background Part of SEMIP (Space Environment Monitoring Instrument Package), that also includes energetic particle sensors (SEMIP/SEM)
Scanning Technique In-situ measurement in GEO
Resolution N/A
Coverage / Cycle Sampling at 0.06 s intervals
Mass Power Data Rate


Providing Agency CMA
Instrument Maturity Flown on operational programme
Utilization Period: 2018-05-01 to ≥2040
Last update: 2018-06-13
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
  • Field or radiowave sensor
Mission objectives
Primary mission objectives
  • Geomagnetic field
Secondary mission objectives
  • Electrostatic charge
  • Radiation Dose Rate
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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
Geomagnetic field3 - highNo specific limitation.Platform, vectorial, narrow dynamics, high resolution
Radiation Dose Rate3 - highNo specific limitation.Platform. Dose
Electrostatic charge3 - highNo specific limitation.Platform. Electrostatic charge