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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: |
Thu, 30 Nov 2023 12:16:38 -0800 |
Yo Nick!
On Thu, 30 Nov 2023 12:50:54 +0000
Nick Taylor <nicktaylor@dataskill.uk> wrote:
> I was thinking that the DGPS fix was somehow cached and not updated
> properly in gpsd - but as you pointed out it's likely a receiver
> problem.
gpsd does not cache anything pas tthe current PVT fix. A few clients
cache a bit more to prevent flashing.
>
> I restarted gpsd and still see DGPS fix, but if I power cycle the
> SIM68 chip then fix reverts to normal 3D FIX so does seem receiver is
> to blame here.
That is pretty much the definition of a cold start. Expected behavior.
> Likely we'll have to live with it as don't believe
> firmware is upgradable.
No two irmware treat DGPS the same way. Hard to say what it
means.
Do you see any change in fix quality between DGPS and3D?
Or get another receiver.
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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