Cell Tower Triangulation
Cell tower location uses triangulation against multiple cell towers to pinpoint the phone’s location based on the ping time from each tower. The distance from a single cell tower can be roughly determined by the time it takes for a phone to respond to a ping. The location of the cell towers combined with their ping times allows the phone’s location to be pinpointed (see Figure 17.2).
Accuracy increases as more towers are included in the calculation.
Although cell tower triangulation uses less power than A-GPS, it is less accurate. Cell tower ...