Interferometric imaging condition for wave-equation migration |

After filtering the reconstructed wavefields with pseudo WDFs, we can
perform imaging with normal procedures. For the case of wavefields
parametrized as a function of data coordinates, we obtain the total
wavefield at image coordinates by summing over receiver coordinates

The image obtained with this imaging procedure is shown in Figure 6(c). As expected, the artifacts caused by the unknown random fluctuations in the model are reduced, leaving a cleaner image of the source.

Similarly, for the case of wavefields parametrized as a function of
image coordinates, we obtain the image by application of the
conventional imaging condition extracting time from the pseudo
WDF of the reconstructed wavefield:

winpcic0,winpcic1,winpcii1,winpiic1
Images produced by the conventional imaging condition using the data
simulated in the background model (a) and using the data simulated in
the random model (b). Images produced from data simulated in the
random model using the interferometric imaging condition with
parametrization as a function of data coordinates (c) and as a
function of image coordinates (d).
Figure 6. |
---|

Interferometric imaging condition for wave-equation migration |

2013-08-29