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Re: gpsrinex - smaller than 1s epoch interval

From: Gary E. Miller
Subject: Re: gpsrinex - smaller than 1s epoch interval
Date: Wed, 20 May 2020 13:20:41 -0700

Yo All!

> The smoking gun, from the u-blox doc:

> u-blox_ZED-F9P_InterfaceDescription_(UBX-18010854).pdf

> "The calculation of the navigation solution will always be aligned to
> the top of a second zero (first second of the week) of the configured
> reference time system."

Following up on that, I prolly misread that.

"Each measurement triggers the measurements generation and, if available,
raw data output"

The measurement rate on the best u-blox is 25 milli second max.  So
RINEX could be as granualar as 25 ms.  That would be 40 Hz.

The navRate is how many measurements per navigation solution, that
can be set to 1.  So 40 Hz fixes.  But we do know the Dynamic Platform
Model seriously affects the nav solution.

I'll run some experiments and add an example in ubxtool-examples.

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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