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Re: [gpsd-users] About RTCM
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From: |
Gary E. Miller |
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Subject: |
Re: [gpsd-users] About RTCM |
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Date: |
Thu, 7 Sep 2017 11:24:19 -0700 |
Yo Cuningan!
On Thu, 7 Sep 2017 18:34:21 +0200
Cuningan Re Set <address@hidden> wrote:
> My plan is to use a neo-m8p as rtcm source and feed multiples neo-m8n
> over the net.
Why bother? It buys you nothing over WAAS.
> But I am concerned about your comment of the WAAS. Here in Europe we
> have EGNOS augmentation system but I think that having my own DGPS
> rtcm station will give the clients much more precision than EGNOS I
> hope.
Nope.
> Or not?? I will have the same resolution??
Yes, same resolution. WAAS and RTCM are bit-for-bit identical. The
fields are too short, not enough precision, so a local RTCM source
is no help. There is a local RTCM source near my house, I have tried
it, no improvement over WAAS.
Your idea can work, just not with RTCM. You could get the raw
GPS measurements and do your own calculations for better accuracy.
Skytraq has a way to send corrections from a surveyed GPS to other
nearby GPS. It can get you centi-meter relative position accuracy. I
have tried it myself, it really works.
RGDS
GARY
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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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