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Re: [Question] gpsd, ntrip & C94-M8P (u-Blox)

From: Gary E. Miller
Subject: Re: [Question] gpsd, ntrip & C94-M8P (u-Blox)
Date: Mon, 11 May 2020 11:49:00 -0700

Yo Florian!

On Mon, 11 May 2020 15:11:28 +0200
Florian Kiera <address@hidden> wrote:

> Hey Gary!
> Am 04.05.20 um 22:37 schrieb Gary E. Miller:
> >> I run one I found as open source, (source of
> >> information to ntrip) and (the
> >> caster).  
> > Thanks.  I'll try it.
> >
> > No updates since 2014, except one link change in 2016.
> >
> > It throws a ton of warnings...  
> Still seems like a possible work-around for a free caster. At least I 
> haven't experienced anything bad so far from it.

Best so far.

> > I don't see the GGA thing that is blocking gpsd on a lot of
> > casters...  
> Sounds good?

Not good.  The GGA thing is bad.

> I've got another question regarding the u-blox M8P:
> The rover's green LED is flashing which the user guide is saying to
> mean the M8P is in RTK Float mode (status).

No u-blox has any LED's.  So this must be related to the unspecfied
board your u-blox is on.

No way for us to understand without seeing your board doc.

> I am using gpsd to receive all informations from the rover and check
> the gps_data_t => status (github: gps_fix_t.status).

No one receives all the informamtion.

> The status returns me a 2 (DGPS). How is that? Is it because my base
> has a too less accuracy for RTK? (20m accuracy)

Last time you sent your config you had your base and rover configurations
wrong and I explained partly what was wrong.  Did you fix that?

Instead of me guessing if you fixed it, send us the output of this so we
can see:

        ubxtool -p STATUS -p CONFIG -P XX

Replace XX with your firmat version.  It is probably 17, 18 or similar.

> If so could you please tell me what accuracy of the base I should
> seek for? (What accuracy is needed for RTK?)

If the base is reporting surveyed in, then you are good.  No way to know if
that is a good as you need, but sufficient for RTK.

> My target is to get the status 3 (RTK float) from the rover. My 
> assumption is that my base isn't accurate enough.

Wrong assumption.

> You've got other
> ideas that could improve it?

As in previous emails.  Awaiting confirmation you fixed things as
previously recommended.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin

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