[OpenSource_GPS] Building a GPS Receiver

[David Bengtson]

Andrew Greenberg wrote:
> 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.

I'm working on a GPS specific receiver for the gnuRadio design, 
documented here www.keystoneradio.com

With the advent of single chip GPS receiver's, it's really not that 
difficult to do a GPS receiver. The board I"m working on consists of a 
Maxim GPS receiver, a  ceramic front end filter, and a TCXO. Pretty simple.


Dave