MATLAB: How to extract phase and amplitude information from FFT

Question

I am doing signal processing of radar data. I applied butturworth bandpass filter and applied fft to the radar data.I want to know how to extract the phase and amplitude information of radar data so i can add it to my ideal radar simualation and make it non ideal 😀 . Thanks

load('fb2040'); % loading the data

x = fb2040(3,:);

y_filt = filter(b,a,x); % filtering the received signal

nfft = length(y_filt);

res = fft(y_filt,nfft)/ nfft; % normalizing the fft

f = fs/2*linspace(0,1,nfft/2+1); % choosing correct frequency axes

res = res(1:nfft/2+1);

figure, plot(f,abs(res));

xlabel('Frequency in MHz');ylabel('Amplitude');

return

Answer 1

If you want the phase and amplitude for different frequencies then these are just:

angle( res );
real( res );

or

abs( res );

if you want the magnitude rather than amplitude.