OXTS Survey+ v3, Руководство пользователя

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Revision: 190902
85
RT-Range User Manual
You can see the is nearly at specification after just this small amount of driving.
However, experience tells us the Kalman filter will continue to make some improvements
(not obvious) during the first few figures of eight. The main part of the motion occurs
after 1100 s when the car was driven in a figure of eight for 6 minutes.
These are fairly large figures of eight driven at relatively low speeds. Notice the brake
stops in the velocity graph ( (a) in Figure 34) where the speed falls to zero. These are
important parts of the warm-up – so as many states in the Kalman filter as possible can
be updated.
Notice how close to the specification the is even without the figure of eight
manoeuvres. A proper warm-up is recommended in order to achieve the highest level of
accuracy. However the effect is small and only significant when you need the full
performance of the .
Improving the configuration after a warm-up
Committing the configuration to the
After the warm-up process has been completed you can commit the improved settings to
the using NAVconfig. The takes its improved orientation, antenna
positions and wheel speed sensor position from values generated in real time during the
warm-up and uses them to improve accuracies.
To commit improved settings to the , first open NAVconfig and select ‘Improve
configuration’. Figure 35 shows this option on the NAVconfig home section.