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The RT will improve the estimate of the secondary antenna orientation settings. Use the “Improve
configuration” option to use the improved values.
Lateral No-slip and Vertical No-slip tabs
This feature uses characteristics of land vehicle motion to improve heading and slip angle and to reduce drift.
Specifying the position of the non-steered wheels makes a huge difference to the lateral drift performance of
the RT when GNSS is not available.
This feature must be disabled for airborne and marine systems where the lateral velocity can be significant.
This feature is also not suitable for land vehicles that use all wheels to steer, i.e. no fixed wheels. The vertical
settings should not be used if the vehicle can perform wheelies.
The Lateral No-slip feature applies heading correction when the land vehicle is not slipping. When the vehicle
is slipping the lateral acceleration is usually large enough that the normal heading corrections provide excellent
results. When combined with a wheel speed input the drift of the RT when GNSS is not available is drastically
reduced.
Figure 26 shows the Lateral No-Slip tab.
Figure 26: NAVconfig Lateral No-slip tab in the Hardware setup section
For the Lateral settings, the system needs to know the position of the non-steered axle (rear wheels on a front-
wheel steering vehicle and vice versa). A position at road height, mid-way between the rear wheels should be
used as shown in Figure 27. Vehicles with all wheels steering cannot use this feature reliably, although minor
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