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Re: gpsrinex epoch timestamps look wrong


From: Greg Troxel
Subject: Re: gpsrinex epoch timestamps look wrong
Date: Tue, 28 Apr 2020 08:29:42 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (berkeley-unix)

> I looked at the old RINEX I managed to get throug NRCAN last year and
> that seems to have the same issue, and yet they processed it using the
> fractional timestamps.
>
> If we assume for a moment that they do not require the timestamps
> to be perfeclty on top of the second, but they need them to be close
> to 30 seconds apart, then maybe the code in gpsrinex.c which selects
> which observations to save should take the fraction into account
> so that instead of:

FWIW, I have been recording raw .ubx from an M8T, on an Emlid Reach, and using
their provided rtklib RINEX converter, resulting in 1s data interval,
and have processed that via NRCAN in both static and kinematic mode with
no issues.



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