DIFFRACTIONS FOR ARBITRARY SOURCE-RECEIVER LOCATIONS

The author's earlier diffraction paper (Trorey, 1970) for coincident source and receiver locations is extended to the case of arbitrary source and receiver locations. The extension requires no additional assumptions and, as in the earlier paper, is in closed form suitable for calculations. The new results permit modeling of normal-moveout effects and can thus, for example, be used to study migration before and after common-depth point stacking as well as to study common-depth-point stacking itself. In general, the point source/receiver response of an arbitrary subsurface with arbitrary source/receiver locations can be calculated.