Re: opensource_gps Digest, Vol 31, Issue 1

Peter - Can you please respond to this as well.

Thanks,

Joel

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> Today's Topics:
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>    1. Building a GPS Receiver (Redefined Horizons)
>    2. Re: Building a GPS Receiver (Andrew Greenberg)
>    3. Re: Building a GPS Receiver (David Bengtson)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 3 May 2006 14:36:59 -0700
> From: "Redefined Horizons" <[email protected]>
> Subject: [OpenSource_GPS] Building a GPS Receiver
> To: [email protected]
> Message-ID:
> 	<[email protected]>
> Content-Type: text/plain; charset="iso-8859-1"
>
> I am a Land Surveyor and software developer that is very interested in
> building a GPS receiver that uses an off-the-shelf commercial GPS receiver
> and open source software.
>
> I had a couple questions for this mailing list. I'm hoping to determine if
> this is a project that I can tackle.
>
> [1] Is there any active development on a "homegrown" GPS receiver? If so
> which project? Would I be able to help with those development efforts?
>
> [2] I'm not very familiar with low-level programming and digital
> electronics. I do know some basic prinicples of logic circuit design and
> dabble in the C programming language. I do have a lot of experience with
> high-level programming languages, and lots of time using survey-grade GPS. I
> am a Linux user, but I'm no Unix pro. I am willing to learn new skills, but
> am I getting in over my head if I try to build my own GPS receiver?
>
> Thanks,
>
> Scott Huey
>
> P.S. - If I can get this thing to work I will be developing GPS data
> collection software for mobile devices. This would be released back to the
> community under an open source license. (Probably GPL.)
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> ------------------------------
>
> Message: 2
> Date: Wed, 03 May 2006 15:34:01 -0700
> From: Andrew Greenberg <[email protected]>
> Subject: Re: [OpenSource_GPS] Building a GPS Receiver
> To: [email protected]
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi Scott,
>
>   
>> I am a Land Surveyor and software developer that is very interested in
>> building a GPS receiver that uses an off-the-shelf commercial GPS
>> receiver and open source software.
>>     
>
> If you're talking about an OEM GPS receiver board, then it's called the
> GPL-GPS project, and you can read about it on our website:
>
>  http://gps.psas.pdx.edu/
>
> Feel free to join the GPL-GPS mailing list if this is what you're
> interested in.
>
>   
>> [1] Is there any active development on a "homegrown" GPS receiver? If so
>> which project? Would I be able to help with those development efforts?
>>     
>
> There's lots of "homegrown" GPS projects out there. Most require a PC to
> operate. For example, see the OpenSource GPS project at:
>
>  http://home.earthlink.net/~cwkelley/
>
> And here's a list of most of the open source projects:
>
>  http://gps.psas.pdx.edu/OpenGnssProjects
>
> There's unfortunately no one working on a embedded open hardware GPS
> receiver... it's a project we'd like to do with GPL-GPS, but it's a lot
> of RF work and a pretty expensive endeavor as well.
>
>   
>> [2] I'm not very familiar with low-level programming and digital
>> electronics. I do know some basic prinicples of logic circuit design and
>> dabble in the C programming language. I do have a lot of experience with
>> high-level programming languages, and lots of time using survey-grade
>> GPS. I am a Linux user, but I'm no Unix pro. I am willing to learn new
>> skills, but am I getting in over my head if I try to build my own GPS
>> receiver?
>>     
>
> Getting involved in GPS is by its very nature an "over your head" kind
> of thing because it involves everything from RF to DSP to software. But
> it's fun! And as long as you have the time, it's possible to do. There
> are tons of books and resources to help you out on your way. You can
> focus on the things you want to, and let other people handle the details
> you don't want to.
>
> In terms of GPL-GPS, all you need is a Linux box with a few serial ports
> and you're on your way... everything is detailed on the website. We'll
> soon have instructions for Windows development as well.
>
> I hope that helpes!
>
> Andrew
>
>
>