Designation Description
L1 frequency/signal The first L band frequency is used by GPS satellites that are centered at
1575.42 MHz.
L2 frequency/signal The second L band frequency is used by GPS satellites that are centered at
1227.6 MHz.
LAG latency time The age of the correction used for the GPS solution.
Longitude The distance east or west from the prime meridian, measured in degrees. The
prime meridian runs through Greenwich, England, and has a longitude of zero.
L band The radio frequencies between 1.2 GHz and 1.6 GHz. GPS carrier frequencies
are within the L band.
Way line The virtual line between two way points in a field. The wayline is used as
reference for further field runs.
Steering angle sensors
(SAS)
Sensors that determine the current directional position of the wheels.
Multipath effects A position error caused by the reflection of GNSS signals on nearby reflective
surfaces, e.g. buildings or water.
Mobile base station A base station that can be easily moved and can independently determine its
new position so that it can then continue working with the DGPS system.
MFA Fendt multi-function armrest
Pitch The change in angle from the front to the rear section of the tractor. For
example, the rise and fall of the tractor's engine cover due to changes in
terrain.
NMEA National Marine Electronics Association.
Ntrip Networked Transport of RTCM via Internet Protocol. Standardized method of
distributing Differential GPS data (DGPS) via the Internet.
OmniSTAR (OMNI
Satellite Timing And
Ranging)
A commercial service that receives GPS signals from NAVSTAR, checks them
for errors and then uploads the error correction data to the OmniSTAR
satellites.
Packet An individual quantity of data, which is transmitted via a medium such as wires
or air.
Pseudolite Terrestrial transmitter which emits signals like those of a satellite.
Pseudo Random Code
(PRC)
A signal that is modulated in such a complex way that it appears to be a
random noise, although it is not a random signal. Also called pseudo random
noise.
Pseudo range The distance measured from the GNSS receiver to the satellite. This value is
not corrected with respect to the time synchronization error between the
satellite and the receiver's clock.
Pulses per second (PPS) The output signal that is sent by the GNSS receiver every second in order to
calibrate the local clock with maximum precision.
Noise Unwanted signals received by the GNSS equipment, caused by external and
internal sources.
9. Appendix
VarioGuide 153
438.020.070.012
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