An integrated position and direction system is disclosed that includes a
digital compass and a satellite positioning system having a receiver
adapted to receive satellite position determining signals. Signals that
are received from satellites are used to determine position of the
integrated position and direction system. The orientation of the
satellites relative to the determined position and relative to the
orientation of the integrated position and direction system is then
determined. In one embodiment, direction determined using the digital
compass is used to determine the orientation of the satellites relative to
the determined position and relative to the orientation of the integrated
position and direction system. Alternatively, heading is used to determine
the orientation of the satellites relative to the determined position and
relative to the orientation of the integrated position and direction
system. In one embodiment the direction of movement or "heading"
determined by the SATPOS is used to orient the displayed skyplot when the
SATPOS is moving, and the direction given by the digital compass is used
to orient the displayed skyplot when the SATPOS is not moving.