Translations:Signal enhancement/6/en

Each seismic trace is associated with a source point and a receiver point. The source and receiver points lie in the surface (x,y) of the earth. Signal-generated noise conceals or distorts the desired primary reflections. Signal enhancement is done either by single-channel processing of each trace, one by one, or by multichannel processing of sets of traces. Signal enhancement involves preservation of the primary reflections and suppression of all other effects on the trace. As a result, not only the usual unwanted random noise is suppressed but also the signal-generated noise such as airwaves, ground roll, reverberations, multiple reflections, and diffractions. The desired results of signal enhancement are traces that have only primary reflections - that is, primaries-only traces.