Figure 119: Ideal Survey Calibration Area - Applanix POS MV V5 Installation And Operation Manual

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POS MV V5 Installation and Operation Guide
Patch
Test
Calibration
The procedure outlined in this appendix includes a calibration check on the following parameters. Perform
the following:
Roll measurement
Position time delay
Gyrocompass heading
Pitch measurement
Calibration
Roll
Complete the gyrocompass calibration routine and remove any offset that may exist.
1. Sail a line to survey the flat region of the test area (A to B of Figure 119 on page F-2).
2. Turn through 180° and sail a reciprocal course along the same line. Log this line separately from
the first survey line.
3. Use the multibeam software and select a single point along both survey lines (point O of
Figure 119 on page F-2). Examine the profile of the seabed perpendicular to the course of the
vessel at this point (the line X–X of Figure 119 on page F-2) and confirm that both survey lines
show the same seabed profile. They should be substantially coincident as shown in Figure 120
on page F-3. If they are not (as shown in Figure 121 on page F-3), this indicates that there is a
constant steady state roll offset in the mounting angles. Use the multibeam software to
compensate for this offset.
F-2
D
X
B
O
A

Figure 119: Ideal Survey Calibration Area

C
E
X
Copyright © Applanix Corporation, 2017

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