Re: [ILUG-BOM] Open Street Mapping Questions

Hey,

On Wed, Jun 25, 2008 at 2:49 PM, jtd jtd@mtnl.net.in wrote:

GPS data is accurate to 2.5 mtr in a few, 5mtr for most under ideal conditions. Usually 10 Mtr. So you are anyway off by a few meters. For the accuracies that you are talking of you would require survey quality gps AND DGPS with correction data for your locality.

Hmm, not sure about different GPS models, the one I have used I noticed that it could give me 2 different ( parallel ) tracks for walking on extreme sides of a 2 way road and that too in New Panvel where the roads are far less wide compared to those in New Delhi ;).

What is "DGPS with correction data for your locality." ?

Cheers!

Pradeepto