Tom

I have no concept of who might still be using gr-radio-astronomy. It hasn't 
been updated in years

If nobody is using it then it can be removed



--
Principal Investigator
Shirleys Bay Radio
Astronomy Consortium
http://www.sbrac.org


On Oct 16, 2011, at 8:30 PM, Tom Rondeau <[email protected]> wrote:

> On Sun, Oct 16, 2011 at 5:52 PM, Marcus D. Leech <[email protected]> wrote:
> I've added two of my projects to CGRAN:   simple_ra and gr_iqtx
> 
> simple_ra is intended as an ultimate replacement for gr-radio-astronomy--it's 
> based on GRC.
> 
> https://www.cgran.org/wiki/simple_ra
> 
> 
> Great, Marcus, thanks!
> 
> If this replaces gr-radio-astronomy, should we take that out of the tree? We 
> were going to have to update it for UHD use fore 3.5, anyways.
> 
> Tom
> 
> 
>  
> 
> gr_iqtx is conceptually similar to the UHD 'tx_samples_from_file' example, 
> but with graphical bits, and it also does things on the receive
>  path, to act as a kind of engineering monitor.  I developed this as a 
> "quicky" for someone in Denmark who's running a DAB+ broadcasting
>  service, and was having some problems.  It grew to the point where it was a 
> real project, so I put it up on CGRAN.  Among other things,
>  the RX-side baseband is copied to an external FIFO, and there's a C program, 
> "cadence" that is used to measure the timing cadence of
>  the DAB/DAB+ "frames".  The stats computed by "cadence" are fed-back into 
> the flow-graph and displayed in an "analysis" pane.  It also
>  includes a coarse "premphasis" equalizer to compensate for the band-shape 
> produced by the interpolator on the USRP hardware--it can
>  be turned on or off.  It also includes the ability to inject a pair of 
> narrowband tones, offset from either band edge, to aid in transmitter
>  diagnosis.  The idea behind the structure is that one might "plug in" 
> different types of analysis tools (even another Gnu Radio flow-graph)
>  to provide signal-quality statistics for whatever modulation/packetizing/etc 
> scheme is in use.  Very much geared towards the broadcast
>  industry, but who knows how it might evolve?
> 
> https://www.cgran.org/wiki/gr_iqtx
> 
> Cheers
> 
> -- 
> Marcus Leech
> Principal Investigator
> Shirleys Bay Radio Astronomy Consortium
> http://www.sbrac.org
> 
> 
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