NavCom Technology GPS Products, Руководство пользователя

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SF-2050 User Guide - Rev. E
Ionospheric and Troposphere effects are used for
navigation.
Real-Time Kinematic ( RTK ) a GPS system that yields
very accurate 3D
position
fixes immediately in real-time.
The
base station
transmits its
GPS position
to
roving
receivers as the receiver generates them, and the roving
receivers
use the
base station
readings to differentially
correct their own positions. Accuracies of a few
centimeters in all three dimensions are possible.
RTK
requires
dual frequency GPS
receivers and high speed
radio modems.
reference station a
reference station collects GPS data
for a fixed, known location. Some of the errors in the
GPS
positions for this location can be applied to
positions recorded at the same time by roving receivers
which are relatively close to the
reference station
. A
reference station
is used to improve the quality and
accuracy of GPS data collected by roving receive s . r
RHCP Right Hand Circular Polarization used to
discriminate satellite signals.
GPS signals are RHCP.
RINEX (Receiver Independent Exchange) is a file set
of standard definitions and formats designed to be
receiver or software manufacturer independent and to
promote the free exchange of
GPS
data. The
RINEX
file
format consists of separate files, the three most
commonly used are: the observation
(.YYo) file, the navigation (.YYn) file, and the
meteorological (.YYm) files; where YY indicates the last
two digits of the year the data was collected.
rover any mobile
GPS
receiver and field computer
collecting data in the field. A
roving receiver’s position
can be differentially corrected relative to a stationary
reference
GPS
receiver or by using
GPS
orbit and clock
corrections from a
SBAS
such as StarFire
™
.
Glossary-62