| 摘要 |
A method of spatially shifting seismic signals acquired through a seismic survey comprises the steps of identifying within the signals a set of N actual locations of seismic receivers and corresponding N seismic signals received by the set of seismic receivers; identifying a set of N' desired locations of seismic receivers; and determining a set of N' signal values at said N' desired locations by evaluating for each of said N' signal values a weighted sum of the N seismic signals, wherein the weights are at least partly determined by evaluating a sinc function, or a mathematical equivalent of a sinc function, using pairs of locations selected from the set of N actual locations as argument. The weights may be at least partly determined by the relative distance between pairs of locations selected from said set of N actual locations of seismic receivers. The pairs may include pairs of locations which are not nearest neighbours. |
