C-Nav 2050M User Manual - page 154
C-Nav2050 User Guide
corrections used to transmit corrections from a base
station to rovers. RTCM allows both real-time kinematic
(RTK) data collection and post-processed differential
data collection. RTCM SC-104 (RTCM Special
Committee 104) is the most commonly used version of
RTCM message.
Range is the distance between a satellite and a GPS
receiver’s antenna. The range is approximately equal to
the pseudorange. However, errors can be introduced
atmospheric conditions, which slow down the radio
waves, clock errors, irregularities in the satellite’
by
s orbit,
e correct distance
by NASA’s Jet Propulsion Laboratory to
TK) is a GPS system that
in
to
le.
s and formats designed to be
cturer independent and to
le
and other factors. A GPS receiver’s location can be
determined if you know the ranges from the receiver to
at least four GPS satellites. Geometrically, there can
only be one point in space, which is th
from each of four known points.
Real Time GIPSY (RTG) is a processing technique
developed
provide a single set of real time global corrections for
the GPS satellites.
Real-Time Kinematic (R
yields very accurate 3D position fixes immediately
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
differentially correct their own positions. Accuracies of a
few centimeters in all three dimensions are possib
RTK requires dual frequency GPS receivers and high
speed radio modems.
Receiver Independent Exchange (RINEX) is a set of
standard definition
receiver or software manufa
promote the free exchange of GPS data. The RINEX fi
format consists of separate files, the three most
commonly used are:
G-22