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

[Sam Bretheim]

Rahman Doost wrote:
> 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 have code that sweeps a user-defined frequency band, transmits compressed FFT
spectral data over the network, presents the full swept spectrum (up to 50-2400
MHz) as a scrollable plot using QWT, detects peaks in the power spectrum, tries
to automatically characterize and identify each peak in numerous spectrum usage
databases, displays the spatially referenced records in Google Earth and
Celestia, logs detected signals according to user-defined criteria, and handles
manual (click-to-tune) and automatic tuning of handoff intercept receivers.  At
the moment, my code depends on versions of GNU Radio and GRC from about two
years ago.  Since there's interest in doing something similar, I'll update it
to work with the current trunk and post it somewhere, hopefully in the next few
weeks.