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Re: DGPS / SBAS
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From: |
Greg Troxel |
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Subject: |
Re: DGPS / SBAS |
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Date: |
Mon, 04 Dec 2023 20:17:40 -0500 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.2 (berkeley-unix) |
"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.
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".