Hemisphere GPS eDriveTC, User Manual

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Appendices
A: Making the Most of Automated Steering
Hemisphere GPS Crescent Receiver Technology sets new standards for
accuracy and flexibility in precision ground agriculture.
However, in-the-field accuracy for automated steering applications is
influenced by a variety of factors, not just the inherent accuracy of the
GPS system.
Figure 5-1. Factors Influencing Automated Steering Accuracy.
GPS Signal Accuracy
GPS Antenna Location -
Make sure to install the GPS antenna on the vehicle in a location that
will optimize its performance. In most cases (with exception of high-
speed self-propelled sprayers,) it is best to have the GPS antenna
mounted on the leading edge of the vehicle cab. This usually provides
an open view of the sky, and prevents multi-path reflections and signal
masking from near-by vertical obstructions.
In the case of high-speed self-propelled sprayers, installing the GPS
antenna on the back edge of the vehicle cab allows more stable
automated steering control.