The one layer case is reasonably simple. Real data looks more like figure 4. An example of a slice through the covariance of many frames. The central spike has been removed. An Exaple 'T-Matrix'.
T is near diagonal.
However, T needs to be inverted in order to recover C, and it is the non diagonality of T which makes this difficult. In developing a method for doing this it is advantageous to use a simulation of the propagation of light through 3D random media. Back to the Scidar page the software used to create the simulated data.