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Re: [Discuss-gnuradio] GPS Proof-of-Concept is available
From: |
Krzysztof Kamieniecki |
Subject: |
Re: [Discuss-gnuradio] GPS Proof-of-Concept is available |
Date: |
Thu, 11 Mar 2004 14:40:34 -0500 |
User-agent: |
Internet Messaging Program (IMP) 3.2.2 |
Well that took forever.
In the 1.5 days it took that email to finally be published, I created a "web
page" for my GPS project.
http://www.kamieniecki.com/krys/gps/
Quoting Krzysztof Kamieniecki <address@hidden>:
> After many moons, I finally have something that may be of interest to
> people.
>
> kkGPS (for lack of a better name) is the beginning of a software GPS receiver
> with software
> correlators. Right now it uses a 5MS/s simulated noise free signal from six
> "satellites" with IFs of
> ~1.25MHz. The software decodes subframes 1, 2, and 3 and uses ephemeris data
> to calculate the user
> position.
>
> Currently the correlators run about 4x slower then needed for a realtime 12
> channel receiver on my
> P3 550Mhz with PC100 ram. A P4-HT 3.2Ghz with PC3200 ram that I have access
> too seems to be able to
> run a ~30 channel receiver in realtime. The SSE correlator is a work in
> progress.
>
> This is prototype code, so excuse the mess.
>
> THERE WILL BE MAJOR CHANGES MADE TO THE CODE.
>
> http://www.kamieniecki.com/krys/gps/README.txt
> http://www.kamieniecki.com/krys/gps/kkGPS-0.0.zip
>
> --
> Krzysztof Kamieniecki
> callsign:KB1KLB
> mailto:address@hidden
>
>
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> Discuss-gnuradio mailing list
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> http://mail.gnu.org/mailman/listinfo/discuss-gnuradio
>