Accuracy of iphone locations

Accuracy of iphone locations: A comparison of assisted gps, wifi and cellular positioning

FREE DOWNLOAD [PDF] PA Zandbergen – Transactions in GIS, 2009

The 3G iPhone was the first consumer device to provide a seamless integration of three positioning
technologies: Assisted GPS (A-GPS), WiFi positioning and cellular network positioning. This
study presents an evaluation of the accuracy of locations obtained using these three