A couple weeks back I was highly influenced by a small-map-based GPS (Global Positioning System) application, developed using C#, targeting windows mobile devices. Embedded GPS receivers are becoming a standard for mobile devices, and all recent Windows Mobile devices feature GPS receivers. Windows mobile users can also add third-party GPS receivers to their devices if needed.
These GPS receivers collect data from satellites, specifically latitude, longitude, altitude, speed, and direction data from four different satellites. Mobile GPS receivers refresh collected data every second and display your present location on the Microsoft MapPoint, a powerful data-mapping tool. Your location is calculated using a mathematical formula called three-dimensional trilateration, which uses the positions of the satellites and their distance from Earth. Read the full article.
http://www.devx.com/wireless/Article/44971?trk=DXRSS_LATEST
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