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Re: ✘ NEO-M9N
From: |
Greg Troxel |
Subject: |
Re: ✘ NEO-M9N |
Date: |
Thu, 20 Feb 2020 20:15:56 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.3 (berkeley-unix) |
"Gary E. Miller" <address@hidden> writes:
> Two pretty pictures. See attached.
>
> barem9n.png is 86k samples from a u-blox NEO-M9N
>
> rtcm3m9n.png is 86k samples from a u-blox NEO-M9N, with RTCM3 from
> a base about a mile away.
>
> The NEO-M9N is a new u-blox L1 only part, with GPS, GLONASS, GALIELO and
> BDS decoders. Bare kits for around $60.
>
> Notice the CEP(50) improves from 1.112 meters to 1.128 meters with
> rtcm3. Not a huge win. Not gonna keep your car in the lane.
Thanks for posting this interesting data.
You say rtcm3, and I'm guessing that means the carrier phase
differential information. I am assuming the M9N has RTK builtin, like
the F9P. Did you tell the M9N to do RTK, or does it just do that by
itself, or ?
I wonder what happesn with rtcm2. I'm not 100% sure, but my impression
is that rtcm2 streams have pseudorange corrections for regular
differential and rtcm3 have carrier phase information for RTK.
- ✘ NEO-M9N, Gary E. Miller, 2020/02/20
- Re: ✘ NEO-M9N,
Greg Troxel <=