RTK-GPS with freerunner: decimeter-level accuracy with Free Software

[Timo Juhani Lindfors]

RANJAN <infibit at gmail.com> writes:
> So get DGPS does one need to have some sort of subscription or license and a
> suitable firmware on the GPS chipset..?

Yes you need an account to some GPS reference station. If you have two
receivers then you can just be your own reference station. Being your
own reference station makes things a lot easier:

1) You can trust that the service will not be going away.

2) You can use very short baselines since you can place the reference
station where you need it.