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| GPS A-GPS |
What is GPS?
GPS is short for Global Positioning System. This system is operated by U.S. Department of Defense with a constellation of 24 satellites orbiting the earth at high altitude transmitting signals to GPS receivers so as to determine the receiver’s location, speed and direction.
How accurate is GPS?
The position calculated by a GPS receiver requires the current time, the position of the satellite and the delay of the received signal. Accuracy of the location data can be affected by satellites adjustment, poor satellite geometry, weather conditions and natural obstacles
How long does it take to establish GPS usage?
Establishing a GPS connection may take from a couple of seconds to several minutes while in the car may take longer. Assisted GPS (AGPS) makes use of cellular network and satellites to reduce connection time to a few seconds.
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GPS can be used in the following areas:
- Navigation from Point A to Point B with voice guidance.
- Finding Point of Interest nearest to you, such as ATM, Petrol kiosk.
- Location Based Application such as geo tagging or sports tracking.
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Assisted-GPS
- GPS is a satellite based positioning system. Assisted GPS, or A-GPS was introduced to enhance performance.
- Assistance for location calculation comes from network side and purpose is to increase accuracy, speed up the signal detection and reduce the processing power in the device. Especially in the city environment where the flat of blocks are blocking the visibility to the satellites, accuracy and speed improvements are valuable.
- How to turn on AGPS (N95, N95 8GB, N82, 6110 Navigator).
*Data charges may apply for application usage
