Road Angel Navigator User Manual - 9. Background Information
9. Background Information
About Global Positioning Satellites (GPS)
Operational since 1990, 24 satellites orbit the earth at a height of 11,000
miles. At any given point on the globe, at least 4 satellites are in view at any
one time. Using sophisticated aerials and triangulation techniques, units
such as ROAD ANGEL Navigator are able to compute your position to
within 5-10 metres.
Occasionally, when roads are close together, ROAD ANGEL Navigator may
place you on the wrong road. If this happens, keep driving and ROAD
ANGEL Navigator will automatically correct itself when it has a better fix or
when the road network simplifies.
ROAD ANGEL Navigator may lose the GPS satellite signal temporarily
owing to tunnels, tall buildings, bridges, dense foliage or adverse weather
conditions. When you are clear of the obstruction, ROAD ANGEL Navigator
should re-acquire satellite signals in a few seconds.
GPS Status
To view GPS information, tap on
and select GPS Status. The following
screen is displayed:
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