Telenav Scout v1.0 for iPhone (open market) User Manual

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How accurate is the GPS?

GPS accuracy can range from 20m (approx. 65 ft) to 100m (approx. 328 ft). Most of the time, the GPS is accurate to

less than 50 meters (approx. 164 ft).

What are ideal conditions for GPS navigation?

Ideally, a device with a GPS receiver needs a clear view of the sky, starting from about five to ten degrees above the

horizon. Solid or massive obstructions can reduce accuracy or block GPS signals, and may cause extended initialization

time (time to first GPS fix). Common obstructions include tall buildings, covered parking lots, tunnels, trees, and terrain

features.
If you are parked in a covered parking lot or near a tall building, it is recommended that you move to an open area and

then begin to use Scout.

Why does GPS not work near buildings and other tall objects?

Your device requires signals from GPS satellites in order to work, so it needs a clear view of the sky. Dense materials

(such as concrete, rock, steel, heavy wood), tall buildings, terrain features (like mountains, ridges, and cliffs), and large

trees can block or degrade GPS signals and may make it impossible to determine your location.
GPS satellites are not always immediately overhead and could be anywhere in the skies at any time, even low on the

horizon; however, there are enough satellites in orbit so that four or more will be view of your device if not blocked by

large objects, terrain, or dense materials.

How do I know that my device is receiving GPS signals?

Scout alerts you if your device is not receiving GPS signals. If this happens, move to an area where there is a clear view

of the sky so your device can receive GPS signals from space.

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