Measurements and Applications
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.
Full Name
GPS receiver-based Attitude, Position, and profiling experiment (GAP)
Status
Operational
Instrument Agencies
Maturity
Instrument Type
Space environment
Geometry
Instrument Technology
GNSS radio-occultation receiver
Sampling
Other
Data Access
Open Access
Data Format
Waveband
1.57542 GHz and 1.2276 GHz
ePOP on CASSIOPE - Enhanced Polar Outflow Probe on the CAScade, Smallsat and IOnospheric Polar Explorer (2013 - 2025) |