NavCom NCT-2030M Rev.C - Manual (Page 55)

NCT-2030M User Guide - Rev. C
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-53