Total Electron Content (Tec) Measurement Instruments

Measurements > Gravity and Magnetic Fields > Gravity, Magnetic and Geodynamic measurements > Total electron content (TEC)
Measurement Definition: Number of electrons in between two points. Observed under more viewing angles so as to generate profiles by tomography - Physical unit: [ electrons/m2 ]; practical unit: TECU = 1016 electrons/m2 - Accuracy unit: [ % ].
InstrumentStatus/
Accuracy		Instrument DescriptionMeasurement TechnologyTimeline
CEROperationalRadio transmission from e-POP to ground for radio propagation and ionospheric scintillation measurements.n/a
GNOS-1OperationalAtmospheric sounding for weather forecasting.GNSS radio-occultation receiver
GNOS-2OperationalAtmospheric sounding for weather forecasting.GNSS radio-occultation receiver
m-NLPOperationalm-NLP measures the plasma around the Earth at a higher resolution than other Langmuir probe instruments that have been flown in space.n/a
RFBOperationalTransmitter that enables ground-based measurement of ionospheric scintillation and ionospheric total electron content (TEC). Critical to understanding the impacts of space weather on satellite communication systems and GPS.n/a
SSULIOperationalMeasures vertical profiles of the natural airglow radiation from atoms, molecules and ions in the upper atmosphere and ionosphere.n/a
TGRSOperationalTGRS is the radio occultation receiver, which will receive signals from GPS, Galileo, and Glonass.GNSS radio-occultation receiver
SEM (FY-2)No longer operationalMeasures space environment parameters to support space craft operations.n/a
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