Dilution of precision (DOP )
A description of the purely geometrical contribution of the uncertainty in a position fix.
Ellipsoid
A mathematical figure formed by revolving an ellipse about its minor axis, used in geodesy to best fit the shape of the earth.
Ellipsoidal elevation
The vertical distance of a point above the ellipsoid.
Firmware
Embedded software that resides on a hardware device.
Geoid
An equipotential surface which coincides with mean sea level and extends everywhere, perpendicular with the force of gravity.
GIS (Geographic Information System)
Geographic Information System
GIS DataPRO
The office software used interact between the Leica Geosystems GS20 and GIS and CAD packages.
GPS
Global Positioning System
GPS Time
A continous time system based on the Coordinated Universal Time (UTC) from 6th January 1980.
Greenwich Mean Time
The mean solar time of the meridian of Greenwhich. Used as the prime basis of standard time throughout the world.
HyperTrack
Leica’s Trademark tracking technology created for very inhospitable environments, for ex. Urban Canyons.
Job
A Leica Geosystems GS20 Project consisting of multiple filetypes.
Latitude
The angle between the ellipsoidal normal and the equatorial plane. Latitude is zero on the equator and 90o at the poles.
Loader
The software that loads the firmware into the hardwares system memory on boot.
Local Time
Local time equals GPS time + time zone.
Logging rate
The rate in which raw GPS data are written
Leica GS20 Field
96
Glossary
