18.1. Appendix A – Glossary
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Fallback Satellites and correction sources require specific
position accuracy when computing the position of the
vehicle. If the system is not receiving enough data to
compute the vehicle’s position with the required
accuracy, auto steering will not be enabled. The
fallback feature allows the system to bypass the
position accuracy requirement so that auto steering can
be engaged. This is useful in situations where a high
degree of position accuracy is not required.
Field Defined working area of the tractor.
Field
Boundary
The edge of the field.
Firmware A computer program that is permanently embedded in
the hardware of a device.
GDOP (Geometric Dilution of Precision) GDOP is a metric
used to quantify the accuracy of GNSS satellite
geometry.
GLONASS Global Navigation Satellite System (Russian GNSS)
GNSS Global Navigation Satellite System
GPS Global Positioning System (US GNSS)
Guideline The virtual line between two way points in a field. The
guideline is used as reference for further field runs (also
Wayline).
HDOP (Horizontal Dilution of Precision)
HDOP is a metric for quantifying the accuracy of the
horizontal (latitude/longitude) position information
received from the GNSS satellites.
HRMS The HRMS (Horizontal Root Mean Squared) calculates
an average horizontal position from the source
information from the satellites
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