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prabuddhadg · 29th August 2006, 15:05

I know nothing about GPS, so this question may sound foolish, but can any one tell me why we need GPS when we have cell phones? What I mean is that the cellular network can identify which cell someone is in, which of course is a large area, but generally, does the same thing with larger margin for error. So, if the cell operator can link the positions of the cell transmission towers with a map, you have a rough positioning system. Or is there a flaw in this? Other than the fact that in some forest with no habitation you would not expect a cell phone to work.

29th August 2006, 15:05	#46 (permalink)
prabuddhadg BHPian Join Date: Jan 2006 Location: Mumbai Posts: 656	I know nothing about GPS, so this question may sound foolish, but can any one tell me why we need GPS when we have cell phones? What I mean is that the cellular network can identify which cell someone is in, which of course is a large area, but generally, does the same thing with larger margin for error. So, if the cell operator can link the positions of the cell transmission towers with a map, you have a rough positioning system. Or is there a flaw in this? Other than the fact that in some forest with no habitation you would not expect a cell phone to work.