[Dprglist] rtk2go
Thalanayar Muthukumar
tnkumar at gmail.com
Mon Oct 18 16:05:18 PDT 2021
Thanks @IronReign ... I will check out ublox F9P.
Regards.
- Kumar
On Mon, Oct 18, 2021 at 4:00 PM Iron Reign <ironreignrobotics at gmail.com>
wrote:
> Kumar,
>
> Looks like that receiver supports multiple constellations, which is nice,
> but I'm pretty sure it won't have any RTK features, so you're looking at
> your normal 2-3 meter accuracy range. RTK receivers are significantly more
> expensive and you'll also need to invest in a matching antenna. There's a
> section of my notes the ublox F9P which is the module I'm using.
>
> On Mon, Oct 18, 2021 at 3:19 PM Thalanayar Muthukumar via DPRGlist <
> dprglist at lists.dprg.org> wrote:
>
>> I am considering adding (https://www.adafruit.com/product/4415) to my
>> rover.
>>
>> Regards.
>> - Kumar
>>
>> On Mon, Oct 18, 2021 at 1:57 PM Thalanayar Muthukumar <tnkumar at gmail.com>
>> wrote:
>>
>>> 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
>>>>>
>>>> _______________________________________________
>> 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/20211018/6bb3a2e1/attachment.html>
More information about the DPRGlist
mailing list