BackForwardInstrument:  MAYAK 

Instrument details
Acronym MAYAK
Full name On-board radio transmitters
Purpose To measure electron density and total electron content in the ionosphere
Short description

Description not available. Presumably, active system transmitting at frequencies 150 and 400 MHz


Part of the instrument package carried by 4 satellites of the 5-satellite Ionozonde constellation

Scanning Technique

In-situ measurements 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: 2024-03-04
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 Scintillation
  • 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 Scintillation*1 - primaryNo specific limitation.Earth's limb. Scintillations. Active radio waves