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Re: [gpsd-users] Galileo

From: Gary E. Miller
Subject: Re: [gpsd-users] Galileo
Date: Tue, 6 Mar 2018 10:32:08 -0800

Yo aimdev!

On Tue, 6 Mar 2018 12:08:19 +0000
aimdev <address@hidden> wrote:

> Galileo has been enabled using the ubx-center program as has NME 4.1, 
> and the Galileo satellites are present. Nmea sentences as monitored
> by ublox-center are present

Yeah, but did it stick?  You gotta save the updated config, some
u-blox do not have a way to save config.

> I also disabled all constellations except Galileo,

Bad idea, except for testing.  I often have zero GALILEO overhead.

> but suspect using
> gpsmon that this may be modified by gpsd as there are more satellites
> that I expect,

Bad expectations.  u-blox still tracks the other GNSS, it just does not
use the other brods in its nav/time solutions.

> Grepping the code show’s no occurrences of $GAGSA or $GAGSV sentences,
> which makes me suspect gpsd is not Galileo compliant, but I am happy
> to be proven incorrect :)

Incorrect!  gpsd ignores the talker ID.   Just look for GSV.

Sadly, GPS do non-standard things with the talker ID these days, so
GPS may need talker ID parsing in the future.

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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