POS MV V4 User Guide
Installation
Copyright © Applanix Corporation, 2009
2-40
POS MV of the relative positions of the IMU, the GNSS antenna, the multi-
beam transducer (sensor 1) and the vessel by relating them all to a common
reference point that you have defined. It may be convenient for you to define
the reference point to be coincident with the IMU for example, in which case
the lever arm distances for this relationship will be zero.
Measurements of position, attitude, velocity and dynamics displayed by the
main window of the MV-POSView Controller program (
Figure 37, page 5-4)
are valid for the vessel location. You define their precise point of validity by
configuring the system with the lever arm distances between the reference
point and your chosen vessel location.
Mounting Angles
Note: Measure angles in degrees, resolved into the longitudinal, lateral and
vertical axis in the reference frame:
• IMU with respect to the reference frame
• Sensor with respect to the reference frame
When measuring the mounting angles you must resolve them into rotations, in
a strict sequence, about the longitudinal, lateral and vertical axis using the
reference frame.
Record the measurements carefully so that you can use the MV-POSView
Controller program to configure the system. These measurements inform
POS MV of the relative orientations of the IMU and the multi-beam transducer
(sensor 1) by relating them all to a common reference frame that has been
defined. It may be convenient to define the reference frame to be coincident
with the multi-beam transducer for example, in which case the mounting
angles for this relationship will be zero. Note that, by definition, the vessel
frame and the reference frame co-align.
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