[Discuss-gnuradio] usrp_spectrum_sense.py

[Kyungtae Kim]

Hi,

In my experimentation, the measured power depends on fft_size and
dwell_delay in usrp_spectrum_sense.py while measuring noise power, the
larger those values results in higher measured power even if it is
normalized based on the fft_size like this. 

20*math.log10(math.sqrt(bin)/tb.fft_size) 
   - 20*math.log10(tb.fft_size) 
   -10*math.log(tb.power/tb.fft_size/tb.fft_size)

I wonder it is normal operation.   

Thanks,
Kyungtae