H 12 Glossary
GPSautonomous positioning
A mode of operation in which a GPS receiver computes position fixes in real time from satellite data
alone, without reference to data supplied by a base station. Autonomous positioning is the least
precise positioning procedure a GPS receiver can perform, yielding position fixes that are precise to
±100 meters.
H
HDOP
The horizontal component of PDOP.
Headland
A guidance pattern that contains straight lines within a boundary. Guidance patterns are for use
with automated steering.
I
IMD
Inertial Measurement Device.
IMEI
International Mobile Station Equipment Identity. A number to identify mobile equipment. The GSM
network uses this number to identify valid devices. The IMEI number has no relationship to the
subscriber.
IMU
Inertial Measurement Unit. An electronic device that measures and reports on a vehicle's velocity,
orientation, and gravitational forces, using a combination of accelerometers and gyroscopes.
Integrated radio
Trimble integrated radios contain a radio antenna integrated with the GNSS receiver or display in a
single unit. These integrated radios receive corrections transmitted by Trimble GNSS RTK base
stations.
L
Logging
Also called coverage logging. Logging records the area that you have covered when you carry out an
operation, for example applying fertilizer to a field.
Version 1.075, Revision C TMX-2050 Display User Guide 333
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