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iphonegps
Ben
Ben

Reputation: 746

How accurate is the iPhone 3G GPS for measuring Distances between two CLLocation?

In my application the user will hold the iPhone and walk in straight line, iPhone will alert the user every 2 meters to make lux measurements and record them. Is the GPS on the iPhone accurate enough for such task? (given that the place is the runway of the airport and should have clear reception of GPS satellites signals...)

Upvotes: 2

Views: 1628

Answers (2)

David Kanarek
David Kanarek

Reputation: 12613

No, you won't get that good a fix. 2m is about the limit of GPS and that usually requires significant time without moving. 10m seems to be what you should be able to get, though I've heard worse and (obviously Ole above) better.

Upvotes: 1

Ole Begemann
Ole Begemann

Reputation: 135548

The best reported GPS accuracy I ever got was about 7 m. Why don't you build a simple sample app and test it for yourself? It should only take a few minutes.

Upvotes: 1

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