1. A method for processing seismic data for geological exploration, comprising: receiving a plurality of seismic signals that were acquired from one or more seismic receivers, wherein the plurality of seismic signals comprises a plurality of take-off angles; forming a plurality of far-field signatures representative of the plurality of seismic signals; associating a plurality of traces representative of a plurality of reflections of the seismic signals with the plurality of take-off angles; forming a plurality of de-signatured traces from the plurality of associated traces and the plurality of far-field signatures; and storing the plurality of de-signatured traces to a computer memory.