Superior Signal-to-noise Ratio
The fundamental geophysics behind UniQ
Seismic acquisition is a battle of signal against noise, and the main problem with conventional receiver array data is the insufficient spatial sampling of the noise, which results in aliasing of this noise.
Correlation of aliasing and useable bandwidth
The right panel in the image to the right shows data recorded with a 16-m-long receiver array; it displays aliasing of ground roll and the airwave because of the wraparound effect in the FK domain. The signal, which is expected to dominate the central area of the FK plot, becomes contaminated.
In contrast (see the left panel in the image on the right), point-receiver single-sensor data are unaliased, allowing processing of the entire useful frequency range without coherent noise contamination.
The FK domain filtering is limited in frequency by the wraparound of coherent noise. The useable bandwidth for AVO processing is substantially reduced for conventional receiver array data, as the higher frequencies are distorted in phase and amplitude due to aliasing.
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