BackForwardInstrument:  SWS/SEM/NADD 

Instrument details
Full name Space Weather Suite / Space Environment Monitor / Neutral Atmospheric Density Detector
Purpose To monitor the composition and density of the neutral atmosphere in the thermosphere.
Short description Neutral atmosphere density detector. Can measure He, O2, N2 and other gases. Atmospheric density detection range: 1×10-13~1×10-10kg/m3.
Scanning Technique
Coverage / Cycle
Mass Power Data Rate


Providing Agency CMA
Instrument Maturity Flown on operational programme
Utilization Period: 2026 to 2032
Last update: 2022-12-05
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
  • Energetic particle spectrometer
WIGOS Subcomponents
  • Subcomponent 1
  • In-situ plasma probes, and energetic particle spectrometers and magnetometers at GEO and LEO, and magnetic field at GEO
  • Plasma density sensor at LEO
Mission objectives
Primary mission objectives
  • Ionospheric plasma density
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.