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Chapter 4 SMART7 with SPAN Operation
SMART7 Installation and Operation User Manual v6
78
Figure 26: Multi-Line IMU Body to Vehicle Calibration
The steps for the calibration routine are:
1. Apply power to the SMART7.
2. Configure the SPAN system, see
3. Perform an initial system alignment using one of the methods described in
on page 71. Ensure the system reaches Solution Good.
4. Enable a new calibration using the
INSCALIBRATE
command, with the optional standard deviation target
omitted:
INSCALIBRATE RBV NEW
5. Start to move the vehicle. Drive a straight course, at a vehicle speed greater than 5 m/s (18 km/hr). A dis-
tance of approximately 250 meters is recommended.
To monitor the calibration, log
INSCALSTATUS
using the ONCHANGED trigger.
6. When the end of the available distance is reached, stop the vehicle. Halt the ongoing calibration by sending
the
INSCALIBRATE
command again:
INSCALIBRATE RBV STOP
7. At this point
INSCALSTATUS
will report a source status of CALIBRATED. Turn the vehicle around and
come to a stop on the finishing point of the previous line.
8. Initiate the second pass of the calibration by issuing the
INSCALIBRATE
command with the
ADD