Re: [gpsd-users] Applying NTRIP RTCMv3 Corrections to GPS Receiver in Real-Time

[Mike Tubby]

On 3/12/2018 10:25 PM, Gary E. Miller wrote:
> Yo Joshua!
>
> On Mon, 12 Mar 2018 18:17:42 -0400
> "Joshua Quesenberry" <address@hidden> wrote:
>
> > What RTK solutions are available to correct GPS readings in
> > real-time?
> RTCMvXX, SBAS, etc.
>
> > Is this something GPSd can do?
> Yup.
>
> > I have access to an NTRIP
> > caster that collects RTCMv3 messages from an L1/L2 GPS-only local
> > base station. The RTCMv3 messages being transmitted are 1004, 1006,
> > and 1008.
> When I have used RTCM, with Skytraq, the GPS has two serial ports.
> One that GPS uses, and the other that is used to RTCM.  In that case,
> gpsd is not in the loop.  Does you GPS have two inputs?
>
> I think gpsd knows how to decode various RTCM packets, but not how to pass
> them on to the GPS.  I could be easily wrong on that.
>
> RGDS
> GARY

Likewise, when I have used RTCM-SC104 with Trimble GPSes the second 
serial port has been configured for RTCM input.

Mike