We now have a much wider dynamic range of the signal (with better SNR).
The outliers are mainly WLAN interferences.
- usrp/evscan: changed threshold from -50 dB to -70 dB
- usrp/evscan: increase outlier tolerance from 2 dB to 10 dB
- usrp/plscan: changed display range from [-35:-25] to [-40:-5]
- usrp/evscan (usage, main): treat all arguments but the last as options
and pass them to "fft"
- usrp/fft.c (fft_complex, do_fft): moved actual FFT calculation to
separate function
- usrp/fft.c (fft_real, do_fft): added real-valued FFT (DCT) as alternative
- usrp/fft.c (main): undocumented option -a to set the FFT algorithm
- usrp/fscan: perform a frequency scan in my test setup
- usrp/evscan: determine the frequency-dependent signal strength from a
frequency scan
- usrp/plscan: plot one or more data sets produced by evscan
