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Instrument details
Acronym
GAP
Full name
GPS Attitude and Positioning Experiment
Purpose
To measure spacecraft velocity and attitude as well as TEC (Total Electron Content) of the ionosphere
Short description
GPS receiver for positioning and navigation, also measuring the Total Electron Content between the platform and the GPS satellite by the phase delay of two operating frequencies
Background
Part of a package of instruments to study the Magnetosphere
Scanning Technique
Travelling cross the Magnetosphere in a highly-elliptical orbit
Resolution
N/A
Coverage / Cycle
N/A
Mass
Power
Data Rate
Providing Agency
CSA
Instrument Maturity
Backed by strong heritage
Utilization Period:
2014 to 2021-12-17
Last update:
2017-03-31
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
Other payload component Positioning system
WIGOS Subcomponents
No WIGOS subcomponents have been defined.
Mission objectives
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
Variable Relevance for measuring this variable Operational limitations Explanation
Geoid 4 - fair Highly indirect. Opportunity information from GNSS receiver used for precise orbit determination
Gravity field 5 - marginal Highly indirect. Opportunity information from GNSS receiver used for precise orbit determination
Instrument: GAP