| 摘要 |
Estimation of direct arrival signals includes obtaining 646 notional source signatures for notional sources that correspond to source elements in a seismic source. A first predicted direct arrival signal at a first location and a second predicted direct arrival signal at a second location is determined 647. The first location corresponds to a seismic receiver and the second location does not correspond to a seismic receiver. A transfer function is determined 648 based on the first predicted direct arrival signal at the first location and the second predicted direct arrival signal at the second location. An estimated direct arrival signal at the second location is determined 649 based on the transfer function and a measurement by the seismic receiver corresponding to the first location. The estimated direct arrival signal represents what a measured direct arrival signal would be at the second location. In another aspect, the first direct arrival signal is predicted based on a propagation of a combined notional source signature to a first location having a receiver taking into account a distance from the source elements of the combined source to the receiver. |
