[FOSS-GPS] Re: FOSS-GPS Digest, Vol 12, Issue 3

Joseph Reeves iknowjoseph at gmail.com
Tue Sep 22 06:45:09 EDT 2009

Hi Juan Lucas,

You're right of course, the accuracy of the GPS receivers in phones is
pretty good these days; mine shows me wha side of the street I'm
driving down when it's in my steel car and features such as A-GPS mean
they also enjoy a low Time To First Fix (TTFF) and quickly produce
reasonably accurate results.

They could be more accurate, however ;-)

Andre has already mentioned the blind in urban environments (good
call), but it wasn't the one I was thinking of. Here at work (Oxford
Archaeology, for those of you who haven't heard from me before) we use
DGPS surveying equipment with accuracy down to a couple of
centimetres. Combined with a detail pole (a pole with a spike on the
bottom, a GPS antenna on the top and your device in the middle) you
can survey in whatever you want, to amazing accuracy, in very quick
time. Unfortunately these machines start at about £15,000. If we could
reproduce this on a phone, however, we'd be able to give the blind a
handheld unit that can get them down the street safely (they wouldn't
need the pole - this would sacrifice them some accuracy, but they'd
possibly still have enough) and to surveyors a much cheaper tool.

We're still looking for more interested people - if anyone is reading
this thinking they'd like to take part, please drop me an email with
your name and some brief details of interests / skills and we'll see
how this comes together.

Cheers, Joseph

2009/9/22 Juan Lucas Dominguez Rubio <jldominguez at prodevelop.es>:
> Hi.
> Every time I hear about high-precision GPS, I try to imagine a use case
> where that improvement makes a difference.
> In reasonable open sky conditions, I think my phone's integrated GPS allows
> me to identify a car in a row of cars or a tree in a dense park.
> Which precision would you achieve with the architecture you are proposing?
> Can you give an example where the precision you expect to achieve is useful
> and the precision I currently get isn't?
> Regards,
> Juan Lucas
> ________________________________
>> De: foss-gps-bounces at lists.osgeo.org en nombre de Yao Zhongbang
>> Enviado el: mar 22/09/2009 5:16
>> Para: foss-gps at lists.osgeo.org
>> Asunto: [FOSS-GPS] Re: FOSS-GPS Digest, Vol 12, Issue 3
>> Hi, Joseph,
>> Yes, I would like to participate the N900's DGPS project. I am very
>> instersted in this DGPS project, which I had the same idea two years ago.
>> Best regards,
>> Zhongbang
>> 2009/9/22 <foss-gps-request at lists.osgeo.org>
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>> Today's Topics:
>>   1. Participants wanted for Nokia's PUSH competition (Joseph Reeves)
>> ----------------------------------------------------------------------
>> Message: 1
>> Date: Mon, 21 Sep 2009 13:03:24 +0100
>> From: Joseph Reeves <iknowjoseph at gmail.com>
>> Subject: [FOSS-GPS] Participants wanted for Nokia's PUSH competition
>> To: Open Source GPS-related discussion and support
>>        <foss-gps at lists.osgeo.org>
>> Message-ID:
>>        <958244340909210503w2aa659e7p4930974b80e96388 at mail.gmail.com>
>> Content-Type: text/plain; charset=windows-1252
>> Dear all,
>> Nokia is running a competition to hack / publicise their upcoming N900
>> smartphone; they say:
>> "We want you to come up with ideas to hack the N900. A panel of expert
>> judges will pick the most impressive ideas. We’ll support you to
>> create them and then take the final creations on a world tour."
>> There's more on the website here:
>> http://blogs.nokia.com/pushn900/index.php/what-is-push/
>> I'd like to hear from people who would be interested in contributing
>> towards a D-GPS project based upon the Nokia phone; I'll stand as
>> project lead and start work on the 1000 word description if there's
>> enough interest. I propose the development of a D-GPS framework to
>> enable high accuracy GPS position recording within a network of
>> locally connected N900s and to provide two implementations of this
>> technology; a hardware hack to provide the phone with a high
>> sensitivity antenna and detail pole for survey grade recording and a
>> second, standard hardware implementation, to enable precise location
>> and messaging within an urban environment.
>> The deadline for proposals is October 11th, so if anyone's interested
>> we better start working soon.
>> Cheers, Joseph
>> ------------------------------
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>> End of FOSS-GPS Digest, Vol 12, Issue 3
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