Terminator3
Advanced Member level 3
Determine phase shift in quadrature signal using complex FFT and not two "real" FFTs.
Hello! I was able to do this such way:
"real" FFT of signal 1
"real " FFT of signal 2
do ATAN2 of each output and calculate difference.
It works okay, but i wonder can it be implemented using one FFT with complex imput? There are negative frequencies, but how i can do ATAN of complex-valued signal FFT output?
Thanks for reading!
Hello! I was able to do this such way:
"real" FFT of signal 1
"real " FFT of signal 2
do ATAN2 of each output and calculate difference.
It works okay, but i wonder can it be implemented using one FFT with complex imput? There are negative frequencies, but how i can do ATAN of complex-valued signal FFT output?
Thanks for reading!