[Discuss-gnuradio] how to calculate the peak values of a signal spectrum
From:
M. H.
Subject:
[Discuss-gnuradio] how to calculate the peak values of a signal spectrum by a grc project
Date:
Tue, 11 Jan 2011 09:40:31 +0330
usrp_fft.py is one the examples (or utilities) which is prepared in gnuradio source code. this example python utility is in this path: <gnuradio source directory>/gr-utils/src/python/usrp_fft.py
this python example calculates the fft transform of the signal which is captured from the USRP (as source); and then, plots the spectrum (output of fft transform) via a GUI.
one the options prepared on the GUI is "Peak Hold"; that can be selected by checking its checkbox. by checking the Peak Hold checkbox, a green diagram will be ploted on the GUI, that indicates the maximum values of the spectrum in every frequency.
I made a project in grc that generates a python code like usrp_fft.py. but now i need to catch the Peak Hold Diagram values as a vector; to do sum calculations on these values. i tried to use some blocks prepared by grc, like "Operator -> FFT" or "Operator -> Log Power FFT", to calculate the fft spectrum of the USRP signal; but i dont know how to manipulate the output of these blocks and how to catch the Peak Values?
your help will be appreciated thnx
[Prev in Thread]
Current Thread
[Next in Thread]
[Discuss-gnuradio] how to calculate the peak values of a signal spectrum by a grc project,
M. H.<=