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Re: [Discuss-gnuradio] GNU radio
From: |
Nick Foster |
Subject: |
Re: [Discuss-gnuradio] GNU radio |
Date: |
Wed, 21 Sep 2011 11:56:33 -0700 |
Andrea, Andrew,
You're best off reading the source code: http://www.github.com/bistromath/gr-air-modes/
PPM is pretty straightforward to decode. There's a preamble detector (air_modes_preamble.cc), which uses stream tags to mark possible valid Mode S packets, and a slicer (air_modes_slicer.cc) which gets bits out of it. That's all pushed through a message queue into the Python app, which does all the parsing, position decoding, etc.
Feel free to contact me personally with ADS-B- or gr-air-modes-specific questions, that traffic probably doesn't belong on the list.
--n
On Wed, Sep 21, 2011 at 11:35 AM, Andrea Montefusco
<address@hidden> wrote:
Nick,
could you give me a pointer to the schema of your decoder ?
It seems to me that was available somewhere but I didn't manage to retrieve it.
Thanks in advance
*am*
---------------------------------------------------------
Andrea Montefusco iw0hdv http://www.montefusco.com
tel: +393356992791 fax: +390623318709
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- Re: [Discuss-gnuradio] not receiving any fm signal, (continued)
- Re: [Discuss-gnuradio] not receiving any fm signal, Marcus D. Leech, 2011/09/20
- [Discuss-gnuradio] GNU radio, Andrew Rich, 2011/09/20
- Re: [Discuss-gnuradio] GNU radio, Marcus D. Leech, 2011/09/20
- Re: [Discuss-gnuradio] GNU radio, Andrew Rich, 2011/09/21
- Re: [Discuss-gnuradio] GNU radio, Marcus D. Leech, 2011/09/21
- Re: [Discuss-gnuradio] GNU radio, Andrew Rich, 2011/09/21
- Re: [Discuss-gnuradio] GNU radio, Matt Ettus, 2011/09/21
- Re: [Discuss-gnuradio] GNU radio, Nick Foster, 2011/09/21
- Re: [Discuss-gnuradio] GNU radio, Andrew Rich, 2011/09/21
- Re: [Discuss-gnuradio] GNU radio, Andrea Montefusco, 2011/09/21
- Re: [Discuss-gnuradio] GNU radio,
Nick Foster <=
- Re: [Discuss-gnuradio] GNU radio, Patrik Tast, 2011/09/20