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+--- Thread: pyrtlsdr and matplotlib's psd (/thread-12982.html)
pyrtlsdr and matplotlib's psd - kiyoshi7 - Sep-22-2018
Hi, I'm trying to read data and integrate the results for a given bandwidth, something that I thought was going to be easy. the problem is that I cannot control the badwidth.
this is the code I am running, its a light modification from the one found on github.
from pylab import *
from rtlsdr import *
import matplotlib
matplotlib.rcdefaults()
for i in range(50):
sdr = RtlSdr()
# configure device
sdr.sample_rate = 2.4e6
sdr.center_freq = 1.6e9
sdr.bandwidth = 10e9 # I added to set the bandwith
sdr.gain = 1
samples = sdr.read_samples(256*1024)
sdr.close()
# use matplotlib to estimate and plot the PSD
fig = psd(samples, NFFT=1024, Fs=sdr.sample_rate/1e6, Fc=sdr.center_freq/1e6)
xlabel('Frequency (MHz)')
ylabel('Relative power (dB)')
matplotlib.use('Agg')
name = str(i)
savefig(name)
plt.clf()when I run this code I get a sequence of images like this that gives me only a small region. How can I make the region wider? and how can i extract the average relative power like shown in the graph?