BackForwardInstrument:  ARMA-MP 

Instrument details
Acronym ARMA-MP
Full name Radio occultation instrument for Meteor-MP
Purpose Temperature/humidity sounding with highest vertical resolution, space weather. Also, surface observation
Short description Measuring the phase delay due to refraction during occultation between GPS and LEO
Background Follow-on of Radiomet flown on the Meteor-M series
Scanning Technique Limb scanning from the satellite altitude to close-to-surface by time sampling – Azimuth: 90° sectors fore- and aft-
Resolution
Coverage / Cycle 3 GNSS constellation tracked. About 2000 soundings/day - Average spacing 500 km - Global coverage (300 km spacing) in 4 days.
Mass Power Data Rate

 

Providing Agency Roscosmos
Instrument Maturity Flown on operational programme
Utilization Period: ≥2025 to ≥2033
Last update: 2019-01-01
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
  • Earth observation instrument
  • Active and radio-occultation sensor
  • GNSS radio-occultation
Mission objectives
Primary mission objectives
  • Atmospheric temperature
  • Height of the top of PBL
  • Height of the tropopause
  • Specific humidity
  • Temperature of the tropopause
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
Atmospheric temperature2 - very highInaccurate in low troposphere.Two directional antennas, three GNSS system tracked, covering about 1500 soundings/day
Geoid4 - fairHighly indirect.Radio-occultation processing implies precise orbitography. Geoid derived from multi-temporal analysis
Gravity field5 - marginalHighly indirect.Radio-occultation processing implies precise orbitography. Gravity field derived from multi-temporal analysis
Height of the top of PBL2 - very highNo specific limitation.Two directional antennas, three GNSS system tracked, about 1500 soundings/day. PBL top measured as discontinuity of the refraction index
Height of the tropopause2 - very highNo specific limitation.Two directional antennas, three GNSS system tracked, about 1500 soundings/day. Tropopause height measured as discontinuity of the refraction index
Specific humidity3 - highInaccurate in high troposphere.Two directional antennas, three GNSS system tracked, about 1500 soundings/day
Temperature of the tropopause2 - very highNo specific limitation.Two directional antennas, three GNSS system tracked, about 1500 soundings/day
Atmospheric density1 - primaryNo specific limitation.Measuring atmospheric density
Electron Density1 - primaryNo specific limitation.Two directional antennas, three GNSS system tracked, about 1500 soundings/day
Ionospheric Vertical Total Electron Content (VTEC)3 - highNo specific limitation.Two directional antennas, three GNSS system tracked, about 1500 soundings/day
Ionospheric Scintillation4 - fairNo specific limitation.Instrument type = GNSS radio-occultation sounder AND No. of tracked GNSS constellations >= 3 AND It has two directional antennas, looking fore- and aft- = TRUE AND It has ionospheric viewing capability = TRUE