Extending daylight imaging

In this paper, the daylight imaging method is represented mathematically and extended to image arbitrary reflectivity and source distributions in v(x,y,z) media. We temporally crosscorrelate the traces to form pseudo-shot gathers. These gathers are then migrated according to a crosscorrelogram migration operator Schuster (1999). The migration operator can be tuned to image either the source locations, or the subsurface reflectivity distribution. Simple synthetic examples are given to clarify the benefits and limitations of this daylight imaging procedure. A special case of crosscorrelation migration is that of autocorrelation migration Schuster et al. (2000); Yu et al. (2000), except that now the source location does not need to be known.