Hi,
I've heard of people using differential GPS to obtain position fixes
with 20cm accuracy. This means your GPS needs to be 'differential
ready', and that you have access to a signal from a differential beacon.
As I understand it, you can either set up your own differential beacon
(expensive) or use one from one of several new services springing up who
broadcast the differential signals over large areas. Does anyone have
more ideas/information about this method of obtaining position fixes?
Any other ideas of how to obtain ~20cm positional accuracy?
Thanks,
Alan
ab nospam at alias.fdn.fr