Microsoft Corporation LD-1W Manual Do Utilizador
I n t r o d u c t i o n
9
ground stations that monitor the operation of the
satellites.
satellites.
A GPS terminal (such as the Nokia Wireless GPS Module)
receives low-power radio signals from the satellites and
measures the travel time of the signal. From the travel
time, the GPS terminal can calculate its location to the
accuracy of +/- 25 metres. In optimal conditions, the
accuracy may be within a few metres.
receives low-power radio signals from the satellites and
measures the travel time of the signal. From the travel
time, the GPS terminal can calculate its location to the
accuracy of +/- 25 metres. In optimal conditions, the
accuracy may be within a few metres.
The accuracy can be affected by poor satellite geometry.
The more satellites the GPS module can "see", the better
the accuracy. The internal antenna of the GPS module,
which is located on the same side as the Nokia logo,
should be facing upwards for proper functioning. Note
also that some car windshields and windows may contain
metal, for example, for heat reflection or defogging
purposes. This may block or attenuate the satellite signal.
The more satellites the GPS module can "see", the better
the accuracy. The internal antenna of the GPS module,
which is located on the same side as the Nokia logo,
should be facing upwards for proper functioning. Note
also that some car windshields and windows may contain
metal, for example, for heat reflection or defogging
purposes. This may block or attenuate the satellite signal.
The availability and quality of GPS signals may also be
affected by buildings and natural obstacles as well as
weather conditions. Therefore, the GPS should not be
affected by buildings and natural obstacles as well as
weather conditions. Therefore, the GPS should not be
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