GPS, Reference Systems
- Geoffrey BlewittAffiliated withNevada Bureau of Mines and Geology/Seismological Laboratory, University of Nevada Email author
GPS. Global Positioning System, the US-operated Global Navigation Satellite System (GNSS) that can be used to determine a user’s position, in terms of latitude, longitude, and height coordinates, anywhere on the globe with a clear view of the sky.
Reference system. A conventionally adopted system that specifies precisely the meaning of a user’s position.
GPS consists of three segments: (1) the space segment of typically 30 satellites that transmit microwave ranging signals and signals containing information on satellite positions and satellite atomic clock time; (2) the control segment of globally distributed stations that monitor, control, and upload data to the space segment; and (3) the user segment consisting of anybody with a GPS receiver who uses the space segment to find their position (Hofmann-Wellenhof et al., 2008).
Geodetic coordinates, such as those obtained by GPS measurements, are generally defined with respect to some reference system that com ...
Reference Work Entry Metrics
Date: 2016 (Latest)History
- 2016 (Latest)
- GPS, Reference Systems
- Reference Work Title
- Encyclopedia of Geodesy
- pp 1-4
- Online ISBN
- Springer International Publishing
- Copyright Holder
- Springer International Publishing Switzerland
- Industry Sectors
- eBook Packages
To view the rest of this content please follow the download PDF link above.