dGPS Navigation

Greetings,

I was wondering if it is possible/has anyone been able to navigate with the dGPS on an inch-by-inch basis?

For example, I have a grid of 3 ft by 6 ft and I am attempting to give it GPS coordinates to travel to certain points on the grid.

Based on my attempts at this scale, the GPS sensor is not accurate enough, and it would have to be done in a grid the size of a parking lot.

Has anyone had any success with a similar application?

Thank you

Hey ElGalloNegro, this is probably way too tight of a coordinate to be checking GPS. GPS usually only offers a 10 ft (3 meter) accuracy. Sorry!
Best, John