calculate phase angle from output image and input wave

I am working on an acoustic microscope

I have a ricker wave(Mexican hat wave) I am getting back image with amplitudes displaying on each point

I have a 2d image 360x360 This image has been created using the capturing amplitude of the reflected wave.

I want to calculate the phase angle of this image and the coming wave

    %Mexican Hat wave%
    lb = -5;
    ub = 5;
    N = 360;
    [psi,xval] = mexihat(lb,ub,N);
    plot(xval,psi);
    
    image1=meshgrid(xval,psi);
    
    image2 = rgb2gray(imread('coin.jpg')); 
    
    f1=fft2(image1)
    f2=fft2(image2);
    Q=f1*f2;
    b=abs(f1)*abs(f2);
    Q=Q./b;
    
    angles=angle(Q);

But this is giving me NaN and a black img

How to calc phase angle from input ricker wavelet and a img with amplitudes