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Re: DGPS / SBAS
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From: |
Gary E. Miller |
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Subject: |
Re: DGPS / SBAS |
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Date: |
Mon, 4 Dec 2023 17:26:51 -0800 |
Yo Greg!
On Mon, 04 Dec 2023 20:17:40 -0500
Greg Troxel <gdt@lexort.com> wrote:
> "Gary E. Miller" <gem@rellim.com> writes:
>
> > $GNGGA,103832.000,5136.9347,N,00011.1125,W,2,12,0.79,100.2,M,47.0,M,,*6A
> >
> > I wish, but no, the NMEA does say STATUS_RTK. (2), and gpsd is
> > converting it to JSON that says STATUS_RTK (2). So cgps should
> > show DGPS.
> >
> > Does xgps show DGPS?
>
> Picking a random accessible page that seems safely accurate:
>
> https://receiverhelp.trimble.com/alloy-gnss/en-us/NMEA-0183messages_GGA.html
>
> it says 2 is differntial, 4 is RTK Fixed, 5 is RTK Float.
Yes "differential" and is "differential GPS" aka DGPS.
> So aside from the words above saying RTK, I agree. If the receiver
> puts 2 in that field in GGA, then it is reporting DGPS and it is 100%
> right for cgps/xgps to show "DGPS".
But I think the OP claims it does not.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
gem@rellim.com Tel:+1 541 382 8588
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"If you can't measure it, you can't improve it." - Lord Kelvin
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