Re: [Discuss-gnuradio] Mode S and ADS-B

[Tom O]

Eric A. Cottrell wrote:
> 
> Hello,
> 
> I finally checked in the infamous Mode Select code to
> branches/developers/wb1hbu/wip and I am glad this portion is done.
> 
> I spent a couple of days cleaning the code up a little.  I also added
> some features.  Likely I missed using a few neat gnuradio functions.
> 
> There is a usrp_oscope_ms.py program that displays the Mode Select
> signal, Reference Level, and Attributes.  Triggering off of channel 2
> (Reference Level) allows the display of Mode Select waveforms.  I made
> the attributes go negative so they are more visible.  I was surprised at
> the results.
> 
> The usrp_mode_s_logfile.py program outputs Mode Select frame information
> to a log file.  It does no decoding of the data.  It logs the data bits
> and other attributes of the signal and error correction.  It is a good
> program to run if you are in a heavy air traffic area and want to
> generate megabytes of text within an hour.
> 
> 73 Eric
> 
> Hi Eric,
> 
> When I run usrp_mode_s_logfile.py I get:
>    ImportError: cannot import name air
> 
> Can you help me out?
> 
> Tom
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> 
> 

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