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Page Title:
Software case boresight "angles to pointing device |
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|  MIL-D-70789A (AR)
device is raised and then lowered.
Software case boresight "angles to pointing
6.6.3.3.2
device. A set of pointing device boresight angles, A, B, r,
relates the DRU coordinate frame to that of the pointing device.
A is the horizontal angle between the axis of the pointing device
and the vertical projection of
onto the horizontal plane when
the axis of the pointing device and its cross axis are level. A
is measured clockwise from the direction of pointing and is
always positive. B is the vertical angle between the vertical
projection of
onto the horizontal plane and
when the axis
of the pointing device and its cross axis are level. B is
negative when
lies above the horizontal plane and positive
below.
the angle between the horizontal plane and
plane when the axis of the pointing
measured in the
device and its cross axis are level. R is positive when
lies
below the horizontal plane and negative when above. A may have
any value from O to +6399.9 roils. B may have any value from
-1600.0 to +1600.0 roils. R may have any value from -3199.9 to
+3200.0 mils. There are separate sets of pointing device
boresight angles for Orientation 1 and Orientation 2.
132
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