Nokia N85 User Guide - Page 48

Positioning (GPS) Positioning (GPS) You can use applications such as Maps and GPS data to find out your location or measure distances. These applications require a GPS connection. About GPS The trip meter has limited accuracy, and rounding errors may occur. Accuracy can also be affected by availability and quality of GPS signals. Different positioning methods can be enabled or disabled in positioning settings. The coordinates in the GPS are expressed using the international WGS-84 coordinate system. The About assisted GPS (A-GPS) availability of the coordinates may vary by region. Your device supports A-GPS (network service). When The Global Positioning System (GPS) is operated by the you activate A-GPS, your device receives useful satellite government of the United States, which is solely information from an assistance data server over the responsible for its accuracy and maintenance. The cellular network. With the help of assisted data, your accuracy of location data can be affected by device can obtain the GPS position faster. adjustments to GPS satellites made by the United States government and is subject to change with the United States Department of Defense civil GPS policy and the Federal Radionavigation Plan. Accuracy can also be affected by poor satellite geometry. Availability and quality of GPS signals may be affected by your location, buildings, natural obstacles, and weather conditions. The GPS receiver should only be used outdoors to allow reception of GPS signals. Assisted GPS (A-GPS) is used to retrieve assistance data over a packet data connection, which assists in calculating the coordinates of your current location when your device is receiving signals from satellites. Your device is preconfigured to use the Nokia A-GPS service, if no service provider-specific A-GPS settings are available. The assistance data is retrieved from the Nokia A-GPS service server only when needed. Any GPS should not be used for precise location measurement, and you should never rely solely on 48 location data from the GPS receiver and cellular radio networks for positioning or navigation. You must have an internet access point defined in the device to retrieve assistance data from the Nokia A-GPS service over a packet data connection.