CodaOctopus F180R - Troubleshooting Invalid Calibration

Operation
Copyright © 2015 Coda Octopus Products Ltd
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F180R MOTION Sensor User and Reference Guide
Heading (°)
0.25
0.2
0.1
0.07
Attitude (°)
0.06
Position (m)
0.1
(ft)
0.33
(yd)
0.11
Velocity (m/s)
0.02
(km/h)
0.072
(mi/h)
0.045
(knot)
0.039
RT-2 RTK (Requires L1/L2 capability)
Heading (°)
0.25
0.2
0.1
0.05
Attitude (°)
0.06
Position (m)
0.02
(ft)
0.065
(yd)
0.021
Velocity (m/s)
0.015
(km/h)
0.054
(mi/h)
0.034
(knot)
0.029
Heave
The greater of 5% of heave amplitude or 5cm.
NOTE: The calibrated specification published here is not the optimum specification
that the system can achieve, it is an accuracy level at which we judge the system to be
warmed up and operating normally. If the system is in dynamic motion then the
accuracies will continue to improve to reach or better than published calibration
specification.
4.3.4 Invalid Calibration
Usually the cause of an invalid calibration will be one or more of the following:
inaccurate measurements of the GNSS offsets
overestimation of the accuracy of the GNSS offsets measurements
incorrect measurement of the antenna separation distance
incorrect antenna angular alignment
relative movement between the IMU and the antennas
high GPS multipath environment