BackForwardInstrument:  LAERTES 

Instrument details
Full name On-board Ionosonde
Purpose To measure electron density and total electron content in the ionosphere
Short description Description not available. Presumably, active system with a 137 MHz transmitter for the frequency range 0.1-20 MHz
Background Part of the instrument package carried by 4 satellites of the 5-satellite Ionozonde constellation
Scanning Technique In-situ measurement along sunsynchronous orbits
Resolution N/A
Coverage / Cycle Large fraction of magnetosphere and ionosphere
Mass Power Data Rate


Providing Agency Roscosmos
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2024 to 2027
Last update: 2023-12-21
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
  • Subcomponent 2
  • Magnetospheric energetic particles and magnetometers
  • Ionospheric total electron content sensor [at LEO and cross magnetosphere]
  • Radio wave receiver [in LEO and cross magnetosphere]
Mission objectives
Primary mission objectives
  • Ionospheric Total Electron Content (TEC)
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
Ionospheric Radio Absorption1 - primaryNo specific limitation.Earth's limb. Active radio waves
Ionospheric Total Electron Content (TEC)*1 - primaryNo specific limitation.Earth's limb. Active radio waves
Ionospheric Scintillation1 - primaryNo specific limitation.Earth's limb. Scintillations. Active radio waves