THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
Measurements > Gravity and Magnetic Fields >
Gravity, Magnetic and Geodynamic measurements >
Electron density profile


Measurement Definition*: Vertical profile of the electron density in the ionosphere and plasmasphere - Physical unit: [ electrons/m3] - Accuracy unit: [ % ].
InstrumentStatus/
Accuracy
Instrument DescriptionMeasurement TechnologyTimeline
CER
Coherent Electromagnetic Radio Tomography
Operational
Radio transmission from e-POP to ground for radio propagation and ionospheric scintillation measurements.n/a
GAP
GPS receiver-based Attitude, Position, and profiling experiment (GAP)
Operational
Used for spacecraft position and attitude determination and for ionospheric radio occultation profiling measurements in which the relative phase delay of the measured L1 and L2 signals (at frequencies of 1.57542 GHz and 1.2276 GHz, respectively) from different satellites of the GPS constellation will be used to determine the electron density profile of the ionosphere using tomographic techniques. The GAP is turned on an average of 10% of the time, following a schedule devised by the science team.GNSS radio-occultation receiver
m-NLP
multi-Needle Langmuir Probe
Operational
m-NLP will measure the plasma around the Earth at a higher resolution than other Langmuir probe instruments that have been flown in space.n/a
* Description adapted from WMO.
Copyright CEOS | About | Site Search | Report an Issue Researched and written by Symbios