10 print "usage ./plot_psd.py <filename>"
13 filename = sys.argv[1];
15 #a = open("test.out_002", "r");
16 a = open(filename, "r");
21 d = a.read(1024*1024*4);
25 for i in range(0,(len(d))/8):
26 [s_i, s_q] = struct.unpack_from("<ff", d, i*8);
27 samples.append(complex(s_i, s_q));
32 fft_data = fftshift(fft(samples));
33 for i in range(0,len(fft_data)):
37 plot(20*log10(abs(fft_data)));