I would like to use the autocorrelation method and I need to use the Fourier Transform defintion. The problem is that I can't define the (w). Mathematica takes long time to run the code and finally say : A very large output was generated . the following is the code:

g1[\[Theta]_] := Sscar[rff, \[Theta], \[Pi]/2]/norm ;

h1[\[Theta]_, w_] := Sscar[rff, (\[Theta] + w), \[Pi]/2]/norm ;

data = Table[ Integrate [ g1[\[Theta]]* h1[\[Theta], w], {\[Theta], \[Theta]z, \[Theta]\[Pi]}], {w, 0.5, 1.5, 0.1}]

ListPlot[data]