Re: [gpsd-users] UBX-TIM-TP on F9T?

[Gary E. Miller]

Yo Anders!

On Fri, 4 Oct 2019 06:31:17 +0300
Anders Wallin <address@hidden> wrote:

> That sounds good! I will try looking at the current PPS message asap,
> and building from the latest gitlab when you have pushed this.

It is an easy message to parse.

> I'll also use qErr to adjust the PPS as sent top NTP.  The difference
> > will likely be buried in clock jitter.
> >  
> 
> For time-transfer based on post-processing of RINEX/CGGTTS [1] I am
> hoping the qErr correction will make a clear improvement.

You saw gpsrinex?  Is that useful?

I keep looking at the u-blox doc.  I can not find where they say to
add, or subtract, qErr from the measured PPS time.  Do you know?

> [1] see for example
> https://www.bipm.org/ws/CCTF/TAI_TRAINING/Allowed/Fundamentals/Training-2012-GNSS-Defraigne.pdf

Yeah, this traceable time thing keeps coming up.  I'm glad someone is
using gpsd for that.

RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
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    "If you can't measure it, you can't improve it." - Lord Kelvin

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