SF-2110 User Guide – Rev. A
Universal Time Coordinated (UTC)
a time standard
maintained by the US Naval Observatory, based on
local solar mean time at the Greenwich meridian.
GPS time is based on UTC.
a.
WG
em 1984)
the current
sta
ioning and surveying.
Th
the GRS-80 ellipsoid.
Y-c
the
UTC
see
Universal Time Coordinated
.
WAAS (Wide Area Augmentation System)
a set of
corrections for the GPS satellites, which are valid for
the Americas region. They incorporate satellite orbit
and clock corrections.
WADGPS (Wide Area Differential GPS)
a set of
corrections for the GPS satellites, which are valid for
a wide geographic are
S-84 (World Geodetic Syst
ndard datum for global posit
e WGS-84 is based on
ode
the name given to encrypted P-code when
U.S. Department of Defense uses selective
availability.
Glossary-92
Summary of Contents for SF-2110
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