Headwall Nano-Hyperspec Operation Manual page 35

GPS/IMU MAPPING
Note the lower left image where the trace indicators are random lengths and shifted to the front of the sphere. The empty
histogram has no distribution, which is the opposite of the acceptable scan figure.
Figure 2-23. Erroneous Scan, Points too Concentrated.
The results shown in the above figure are from limited rotation of the sensor/IMU device. The movement was limited to a
path shown in the top left of the figure. The movement was primarily a rocking of the unit and not full rotation in multiple
axes, as should be done. Although the histograms, in the top right of the figure are populated, the red chart is erratic and
well below the targeted value of 1.0.
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