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Re: [Discuss-gnuradio] PSD Display from USRP Data

From: Naveen saini
Subject: Re: [Discuss-gnuradio] PSD Display from USRP Data
Date: Fri, 23 Dec 2011 06:05:39 -0800 (PST)

Can i get the USRP code ?

Rahman Doost wrote:
> Hello Guys,
> I am very new to GNU Radio. I am trying to develop a python program that
> graphically displays data from USRP which sweeps a user-defined frequency
> band from down-freq to up-freq. USRP is tuned to divide the input band to
> 3
> MHz sub-bands and return the power spectral density. I am using
> usrp.source_c to connect to the board. I have two threads, one running GUI
> and shows the input of PSD; the second one stores the FFT components of
> each
> sub-band to a file. In the GUI, I use fftsink2.usrp_sink_c() to display
> the
> PSD for the currect scanning band. But what I can not display is the
> current
> sub-band whose FFT result are plotted by usrp_sink_c. That's because on
> the
> X-axis of the plot I have the center frequency 0 and freq ranging from
> -1.5
> MHz to 1.5 MHz. What I need is either having the whole spectrum being
> plotted with history, not just the current scanned sub-band, or
> representing
> the currect frequency sub-band which is being scanned. I was wondering If
> someone can help me out on this.
> Regards,
> Rahman Doost
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