POS MV V4 User Guide
Installation
Copyright © Applanix Corporation, 2009
2-47
Antenna Separation
The scalar distance measured between the two GNSS antennas.
POS MV can calculate this distance automatically during the installation
calibration routine, although this will mean the routine will take longer to
complete. If you make a manual measurement, record the distance between
the antennas to an accuracy of ±5 mm (~¼ in).
To measure the antenna separation distance manually, use one of the
following methods:
• Use a tape measure to measure the separation distance between the
geometric centres of the antennas; that is between the centres of
both antenna domes.
• Stretch a non-elastic string or wire between the GNSS antennas.
Mark the string or wire where it crosses the centres of the antenna
domes. Remove the string or wire and measure the distance between
the marks.
Note: Both methods assume there is a straight unobstructed vector between
both antennas.
Mounting Angles
General
Measure and record the mounting angles relative to the reference frame that
you have chosen. Resolve these angles into three rotations that you must
apply, in a strictly defined sequence, to align the mounting angles with your
chosen reference frame. The Tate-Bryant sequence of rotations is used.
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