Re: [Discuss-gnuradio] USRP Status.

[Marcus Leech]

I have an automatic equalizer function on my spectrum analyser (not 
gnuradio, and not
 USRP), to deal with exactly this problem.  It doesn't work that 
tremendously well, but
 it does flatten the spectral response somewhat.  My application was 
radio astronomy.

My USRP is on its way (got a note from DHL yesterday--hurray).

Expect many stupid questions in the next few weeks, y'all :-)

n4hy wrote:

> The cheapest dirtiest thing to do is to normalize the baseline (up to 
> some
> extent or some frequency bounds) so you get a straight threshold 
> detection
> problem. The correct thing to do is to use different filters but that 
> involves
> changing FPGA code while trying to bring out four or five hardware 
> modules!
>
> Bob
>
>
>
> Lamar Owen wrote:
>
> > Now that I'm getting my mind wrapped around some of the concepts in 
> > DSP, and having read the AD9862 docs and such, I have a status 
> > request of Matt:
> >
> > How's the half-band filter situation going?  For radio astronomy 
> > spectrography, the curved baseline with 1dB or less per division 
> > really makes it difficult to do the work.  What can be done to help 
> > in this regard?  When the signal, fully integrated, is a half dB or 
> > so out of the noise that curve gets mighty annoying.  Does current 
> > USRP hardware CVS have anything new?
> >  
>
>
>
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Marcus Leech                            Mail:   Dept 1A12, M/S: 04352P16
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