Plots from this program plot_fft.c Printed output plot_fft_c.outeight sample input of one cycle amplitude of signal
eight point input of one cycle normalized absolute value of FFT complex output
eight point input of one cycle unambiguous spectrum, half as many values a=cx[i].real+cx[nfft-i].real cx[2*i] cx[2*(nfft-i)] b=cx[i].imag-cx[nfft-i].imag cx[2*i+1] cx[2*(nfft-i)+1] v=sqrt(a*a+b*b)/nfft
tdoa_cwfm1.dat amplitude of signal
tdoa 128 complex point FFT absolute value of FFT complex output
tdoa 128 complex point FFT unambiguous spectrum, half as many values a=cx[i].real+cx[nfft-i].real cx[2*i] cx[2*(nfft-i)] b=cx[i].imag-cx[nfft-i].imag cx[2*i+1] cx[2*(nfft-i)+1] v=sqrt(a*a+b*b)/nfft