BackForwardInstrument:  PWE 

Instrument details
Acronym PWE
Full name Plasma Wave Experiment
Purpose Measurement of the electric field and its oscillations along the satellite HEO cross the magnetosphere
Short description Detailed description not yet available. Presumably, electrometer covering the dynamic range 0.1-1000 mV/m for oscillations in the frequency range from 1 Hz to 10 MHz
Background Companion of the Magnetic field experiment (MGF) on ERG
Scanning Technique Volumetric exploration of the magnetosphere as the satellite travels along the HEO with perigee 300 km and apogee 30,000 km whilst spinning at 1 round / 8 s
Resolution N/A
Coverage / Cycle Full magnetospheric volume, more frequently in low-middle latitudes, consistently with the 31° orbital inclination
Mass Power Data Rate


Providing Agency JAXA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2017 to ≥2021
Last update: 2017-06-28
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
  • Electric Field
Opportunity objectives
  • Geomagnetic field
Show allShow fewer
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 electric fileld
Electric Field3 - highNo specific limitation.Magnetosphere. Electric field oscillations, wide dynamic range
Ionospheric plasma density3 - highNo specific limitation.Ionospheric plasma density measured through observation of oscillations of the electric field
Electron Density3 - highNo specific limitation.Electron density measured through observation of oscillations of the electric field