We can apply an imaging condition that does not assume a uniform contribution of the shots to the image.
This can be done by framing the imaging condition as either a 2-D crosscorrelation or a 2-D deconvolution in the shot position/time dimensions (xs,t).
Figure shows a cartoon of the domain where this imaging condition is computed. As showed in Figure , we can extract a plane (xs,t) from the source and the receiver wavefields at each (x,z) position in the image.
Figure 3 Source and receiver wavefields to be matched in the shot position/time plane.