I need time and power strength information to draw spectrogram. I have to
finish this project as soon as possible, so I am looking for an easiest way to
learn and solve this problem. I wonder if the following method can draw the
spectrogram correctly. I really appreciate your help!
I run the command "./usrp_spectrum_sense.py -d 8 2400e6 2480e6", and then write
the self.u into a file, "usrpoutput". Because I set the decimation equal to 8,
there are 8M samples/sec at USB. I can get the interval between samples is
0.125usec(1/8=0.125). The self.u is in time domain. I can get the amplitude of
the self.u from the file, usrpoutputand, and get the time index of self.u
through n*0.125usec where n means nth sample. I put the time and amplitude
information into matlab and then I can draw the spectrogram using the command
"spectrogram" in the matlab.
---------------------------------------- code
---------------------------------------------------------------
self.u = usrp.source_c(fusb_block_size=options.fusb_block_size,
fusb_nblocks=options.fusb_nblocks)
----------------------------------------------------------------------------------------------------------------
I need time and amplitude information to draw spectrogram. I have to finish
this project as soon as possible, so I am looking for an easiest way to learn
and solve this problem. I wonder if the above method can draw the spectrogram
correctly. I really appreciate your help!
Thank you,
Roy
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