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SHarpPZ
SHarpPZ is receiver deghosting for multisensor variabledepth streamers.

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SHarpPZ is receiver deghosting for multisensor variabledepth streamers. With the addition of the measurement of the vertical component (either velocity or acceleration) of the wavefield we are in a better position to estimate the upgoing wavefield and can do so without the sensitivity to uncertainty in acquisition parameters nor the boosting of noise at notch frequencies.
The quality of data from vertical component sensors can be reduced at low frequency due to strumming noise on the cables, to which acceleration compensated pressure sensors are relatively immune but accelerometers themselves are not. As such we offer a frequencyhybrid solution of Ponly and PZ sum that exploits the approach with best signal tonoiseratio at a given frequency. In this way we can achieve a highquality result over the whole frequency band.
SHarpPZ can be run on any multicomponent streamer, including Isometrix and Sercel MS.

Based on variabledepth Pdeghosting algorithm
Hybrid fx fk domain least squares inversion
Handles irregular offsets
PZ sum accepts P + either Az or Vz input
Ponly and PZ sum results can be blended according to a single frequency or user defines weights
Option to use faster, flatcable algorithm in fk domain (kzweighted PZ sum)
Available across the Shearwater Multisensor streamer fleet for various onboard outputs:
(1) P up, output to any datum
(2) P total – redatumed for any historical matching
(2a) Can be utilised as an additional QC on receiver depths
Examples
Shots: P, Z, Pup
Stacks: P, Z, Pup