[Dprglist] rtk2go
Thalanayar Muthukumar
tnkumar at gmail.com
Mon Oct 18 11:57:37 PDT 2021
Thanks Karim for the fairly detailed succinct :-) answer. Really appreciate
it.
I have downloaded your notes, but have yet to read it.
As a person who plans to take my rover outdoors,and I plan to have internet
access on my rover, it seems I should
connect to a NTRIP server at rtk2go.com (I live in Allen, TX) and by doing
so, I can get higher accuracy.
Your email was very helpful, Karim. Thanks.
Regards.
- Kumar
On Mon, Oct 18, 2021 at 12:04 PM Karim Virani <pondersome64 at gmail.com>
wrote:
> That's a big topic and it bleeds into everything RTK very quickly. So I'll
> try for an almost succinct answer that should provide search terms for
> learning more:
>
> RTK gps rovers require a live timing reference from another specialty GPS
> receiver with a well-known location known as a base station or mount point.
> The base station needs to be somewhat close to the rover's location -
> ideally within 10km, but "long baseline" trials indicate you can get good
> solutions out to and beyond 50km depending on geography. The data coming
> from the base station is usually formatted as RTCM messages but can be
> transferred over any link. Often in very remote locations you have to set
> up your own base station and you might use a point-to-point radio link to
> communicate between rover and base station.
>
> There are also private, commercial and governmental networks of these
> correcting base stations. The private ones are usually monetizing their own
> and governmental base stations. These tend to be pricey services from the
> traditional hobby robotics viewpoint - they are focused on the survey and
> agricultural markets. There is a very large free governmental network (
> unavco.org) that serves active fault and mountain areas but that's mostly
> on the west coast and the rockies. Texas has a free non-real time network
> which can help with post-processing to get a good base-station fix, but
> doesn't help with RTK. NASA operates another fairly open network, but it
> requires getting an account and authorizing - and I didn't want to write
> the authentication code for my robot.
>
> If you have internet access on your rover, one of the ways to get RTCM
> messages is from an NTRIP server. So many of those commercial and
> government networks operate NTRIP servers. The leading implementation of
> NTRIP is called SNIP and the company that makes SNIP also supports a
> voluntary NTRIP server for people who want to publish their base stations -
> known as "mount points" in NTRIP/SNIP land. That network is available at
> rtk2go.com It's completely free and requires no authentication to use as
> a client.
>
> Anyhow, if you are still reading and still want to learn more, you can
> also access my project notes
> <https://docs.google.com/document/d/1S-OwHQL25ngPYy-97KP6jZPA6bVr2L2PiUL6ix_6Dts/edit?usp=sharing>.
> These notes are for my outdoor rovers and as source material for videos,
> blog articles and presentations I might want to do, so they are a bit
> jumbled up. There is a GPS RTK primer that starts on page 16.
>
> -Karim
>
> On Sun, Oct 17, 2021 at 6:44 PM Thalanayar Muthukumar via DPRGlist <
> dprglist at lists.dprg.org> wrote:
>
>> Hi Karim,
>>
>> What is a rtk2go network and how does one use it?
>>
>> Regards.
>> - Kumar
>>
>> On Sun, Oct 17, 2021 at 4:09 PM <dprglist-request at lists.dprg.org> wrote:
>>
>>> Send DPRGlist mailing list submissions to
>>> dprglist at lists.dprg.org
>>>
>>> To subscribe or unsubscribe via the World Wide Web, visit
>>> http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org
>>> or, via email, send a message with subject or body 'help' to
>>> dprglist-request at lists.dprg.org
>>>
>>> You can reach the person managing the list at
>>> dprglist-owner at lists.dprg.org
>>>
>>> When replying, please edit your Subject line so it is more specific
>>> than "Re: Contents of DPRGlist digest..."
>>>
>>>
>>> Today's Topics:
>>>
>>> 1. Re: DPRGlist Digest, Vol 61, Issue 15 (Thalanayar Muthukumar)
>>> 2. Re: DPRGlist Digest, Vol 61, Issue 15 (pulcher)
>>> 3. Free SSD drive at Micro Center Dallas (Thalanayar Muthukumar)
>>> 4. Interesting techniques for 'making & decorating' mechetronics
>>> (Carl Ott)
>>> 5. Re: RTK corrections source in DFW area? (Karim Virani)
>>>
>>>
>>> ----------------------------------------------------------------------
>>>
>>> Message: 1
>>> Date: Sat, 16 Oct 2021 16:45:47 -0500
>>> From: Thalanayar Muthukumar <tnkumar at gmail.com>
>>> To: dprglist-request at lists.dprg.org
>>> Cc: dprglist at lists.dprg.org
>>> Subject: Re: [Dprglist] DPRGlist Digest, Vol 61, Issue 15
>>> Message-ID: <C6BFCA25-36F9-4F55-8CE3-22C187F8F347 at gmail.com>
>>> Content-Type: text/plain; charset=us-ascii
>>>
>>> Micro center Dallas say they are currently sold out
>>>
>>> Sent from my iPhone
>>>
>>> > On Oct 16, 2021, at 4:04 PM, dprglist-request at lists.dprg.org wrote:
>>> >
>>>
>>>
>>> ------------------------------
>>>
>>> Message: 2
>>> Date: Sat, 16 Oct 2021 17:24:35 -0500
>>> From: pulcher <pulcher at killercomputing.com>
>>> To: Thalanayar Muthukumar <tnkumar at gmail.com>,
>>> dprglist-request at lists.dprg.org
>>> Cc: dprglist at lists.dprg.org
>>> Subject: Re: [Dprglist] DPRGlist Digest, Vol 61, Issue 15
>>> Message-ID:
>>> <mailman.2.1634503868.1684.dprglist-dprg.org at lists.dprg.org>
>>> Content-Type: text/plain; charset="utf-8"
>>>
>>> Wife just picked one up.? 2 minutes ago.HaroldSent from my T-Mobile 4G
>>> LTE Device
>>> -------- Original message --------From: Thalanayar Muthukumar via
>>> DPRGlist <dprglist at lists.dprg.org> Date: 10/16/21 4:45 PM (GMT-06:00)
>>> To: dprglist-request at lists.dprg.org Cc: dprglist at lists.dprg.org
>>> Subject: Re: [Dprglist] DPRGlist Digest, Vol 61, Issue 15 Micro center
>>> Dallas say they are currently sold outSent from my iPhone> On Oct 16, 2021,
>>> at 4:04 PM, dprglist-request at lists.dprg.org wrote:>
>>> _______________________________________________DPRGlist mailing
>>> listDPRGlist at lists.dprg.orghttp://
>>> lists.dprg.org/listinfo.cgi/dprglist-dprg.org
>>> -------------- next part --------------
>>> An HTML attachment was scrubbed...
>>> URL: <
>>> http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211016/a33a2617/attachment.html
>>> >
>>>
>>> ------------------------------
>>>
>>> Message: 3
>>> Date: Sat, 16 Oct 2021 19:13:12 -0500
>>> From: Thalanayar Muthukumar <tnkumar at gmail.com>
>>> To: pulcher <pulcher at killercomputing.com>
>>> Cc: dprglist-request at lists.dprg.org, dprglist at lists.dprg.org
>>> Subject: [Dprglist] Free SSD drive at Micro Center Dallas
>>> Message-ID: <205ADA38-0DFD-4C11-8C29-1DE15791571A at gmail.com>
>>> Content-Type: text/plain; charset="utf-8"
>>>
>>> I went to the store just now and picked one up as well. Thanks Harold.
>>>
>>> Regards.
>>> - Kumar
>>>
>>> Sent from my iPhone
>>>
>>> > On Oct 16, 2021, at 5:24 PM, pulcher <pulcher at killercomputing.com>
>>> wrote:
>>> >
>>> > ?
>>> > Wife just picked one up. 2 minutes ago.
>>> >
>>> > Harold
>>> >
>>> >
>>> >
>>> > Sent from my T-Mobile 4G LTE Device
>>> >
>>> >
>>> > -------- Original message --------
>>> > From: Thalanayar Muthukumar via DPRGlist <dprglist at lists.dprg.org>
>>> > Date: 10/16/21 4:45 PM (GMT-06:00)
>>> > To: dprglist-request at lists.dprg.org
>>> > Cc: dprglist at lists.dprg.org
>>> > Subject: Re: [Dprglist] DPRGlist Digest, Vol 61, Issue 15
>>> >
>>> > Micro center Dallas say they are currently sold out
>>> >
>>> > Sent from my iPhone
>>> >
>>> > > On Oct 16, 2021, at 4:04 PM, dprglist-request at lists.dprg.org wrote:
>>> > >
>>> > _______________________________________________
>>> > DPRGlist mailing list
>>> > DPRGlist at lists.dprg.org
>>> > http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org
>>> -------------- next part --------------
>>> An HTML attachment was scrubbed...
>>> URL: <
>>> http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211016/a98cdba3/attachment-0001.html
>>> >
>>>
>>> ------------------------------
>>>
>>> Message: 4
>>> Date: Sun, 17 Oct 2021 09:48:21 -0500
>>> From: Carl Ott <carl.ott.jr at gmail.com>
>>> To: DPRG D-List <dprglist at dprg.org>
>>> Subject: [Dprglist] Interesting techniques for 'making & decorating'
>>> mechetronics
>>> Message-ID:
>>> <
>>> CA+XqQZTVWYVt6B8078wRecqy0JyuD7vEQi2xE9XkQfLd5t5rZQ at mail.gmail.com>
>>> Content-Type: text/plain; charset="utf-8"
>>>
>>> video starts with the final product
>>>
>>> Techniques are pretty interesting.
>>> Build time-lapse starts circa 2:20...
>>> https://youtu.be/rSh0x0GagcQ
>>> -------------- next part --------------
>>> An HTML attachment was scrubbed...
>>> URL: <
>>> http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211017/75dbebe4/attachment-0001.html
>>> >
>>>
>>> ------------------------------
>>>
>>> Message: 5
>>> Date: Sun, 17 Oct 2021 15:03:01 -0500
>>> From: Karim Virani <pondersome64 at gmail.com>
>>> To: Doug Paradis <paradug at gmail.com>, DPRG <dprglist at lists.dprg.org>
>>> Cc: Paul Bouchier <paul.bouchier at gmail.com>
>>> Subject: Re: [Dprglist] RTK corrections source in DFW area?
>>> Message-ID:
>>> <CAKtnkiwq82PVV4riXMP=
>>> 5H9zaTnec3-YE5KJz3pH9TDyPZeNtg at mail.gmail.com>
>>> Content-Type: text/plain; charset="utf-8"
>>>
>>> Hey Paul,
>>>
>>> I've been using the rtk2go network. It's just a voluntary network, so
>>> there's no guarantee that the base stations are correct to a known
>>> precision, nor is there an uptime guarantee. It's also very sparsely
>>> populated in north Texas:
>>>
>>> [image: image.png]
>>>
>>>
>>> But I've found the VN1 mount point in Richardson to be very stable and
>>> accurate for the last year - though it has had some outages.I've been
>>> able
>>> to use it up to 35km away and still get an error bar that I can't
>>> reliably
>>> measure.
>>>
>>> The Arlington mount point also seems stable - it's been there for at
>>> least
>>> 6 months - but I haven't used it. Others pop up from time to time but
>>> haven't lasted long. I've published a base station on rtk2go for short
>>> test
>>> runs, but have yet to mount my antenna on my roof for a stable offering.
>>>
>>> Best,
>>>
>>> Karim
>>>
>>> On Sun, Oct 17, 2021 at 12:40 PM Doug Paradis <paradug at gmail.com> wrote:
>>>
>>> > Paul,
>>> > The correct address for the mailing list is
>>> dprglist at lists.dprg.org.
>>> > BTW, Karim has been working with GPS RTK and has used several free
>>> > correction data stations in the area.
>>> > Regards,
>>> > Doug P.
>>> >
>>> > On Sun, Oct 17, 2021 at 12:35 PM Paul Bouchier <
>>> paul.bouchier at gmail.com>
>>> > wrote:
>>> >
>>> >> Hi Doug - long time no see.
>>> >>
>>> >> I tried to send the email below to the dprg list. You can see I used
>>> the
>>> >> address dprglist at dprg.org, which is what Carl told me to use. It
>>> didn't
>>> >> go through. Do I have the address wrong? Anything else you can think
>>> of?
>>> >>
>>> >> Thanks for any ideas you might have
>>> >>
>>> >> Paul Bouchier
>>> >>
>>> >> ---------- Forwarded message ---------
>>> >> From: Paul Bouchier <paul.bouchier at gmail.com>
>>> >> Date: Thu, Oct 14, 2021 at 5:24 PM
>>> >> Subject: RTK corrections source in DFW area?
>>> >> To: <dprglist at dprg.org>
>>> >>
>>> >>
>>> >> Does anyone know of any free or low-cost stations that provide
>>> internet
>>> >> access to GPS RTK corrections data for the Dallas/Fort Worth area?
>>> >> Apparently TXDOT has NTRIP servers and makes historical data
>>> available but
>>> >> AFICT doesn't provide live data. Looking for corrections data to feed
>>> to an
>>> >> RTK receiver so I don't have to set up my own base station.
>>> >> Thanks
>>> >> Paul
>>> >>
>>> >
>>> -------------- next part --------------
>>> An HTML attachment was scrubbed...
>>> URL: <
>>> http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211017/044594b5/attachment-0001.html
>>> >
>>> -------------- next part --------------
>>> A non-text attachment was scrubbed...
>>> Name: image.png
>>> Type: image/png
>>> Size: 409971 bytes
>>> Desc: not available
>>> URL: <
>>> http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211017/044594b5/attachment-0001.png
>>> >
>>>
>>> ------------------------------
>>>
>>> Subject: Digest Footer
>>>
>>> _______________________________________________
>>> DPRGlist mailing list
>>> DPRGlist at lists.dprg.org
>>> http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org
>>>
>>>
>>> ------------------------------
>>>
>>> End of DPRGlist Digest, Vol 62, Issue 1
>>> ***************************************
>>>
>> _______________________________________________
>> DPRGlist mailing list
>> DPRGlist at lists.dprg.org
>> http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211018/651b525a/attachment.html>
More information about the DPRGlist
mailing list