BackForwardInstrument:  STAFF 

Instrument details
Acronym STAFF
Full name Spatio-Temporal Analysis of Field Fluctuations
Purpose To study wave-particle interaction in the region where the solar wind meets the Earth's magnetosphere
Short description Assemblage of a three-axis search coil magnetometer (measurement from 0.01 to 4 kHz), and a spectrum analyzer to perform the auto and cross correlations between electric and magnetic components on board each satellite
Background Part of a package of instruments for the study of the Magnetosphere
Scanning Technique Formation flight of 4 satellites in coordinated high-elliptical orbits cross the Magnetosphere for 3-D field reconstruction
Resolution N/A
Coverage / Cycle Full magnetospheric volume
Mass Power Data Rate


Providing Agency ESA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2000 to ≥2025
Last update: 2017-04-13
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
WIGOS Subcomponents No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives
  • Electron Density
  • Ionospheric plasma density
Secondary mission objectives
  • Geomagnetic field
Opportunity objectives
  • Electric Field
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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 field5 - marginalNo specific limitation.Magnetic field measured through observation of oscillations of the magnetic field
Electric Field3 - highNo specific limitation.Electric field measured by magnetic field oscillations
Ionospheric plasma density2 - very highNo specific limitation.Ionospheric plasma density measured through observation of oscillations of the magnetic field
Electron Density3 - highNo specific limitation.Electron density measured through observation of oscillations of the magnetic field