Pseudo‐random coded simultaneous vibroseismics

Becquey, M.; Bianchi, T.; Meunier, J.

doi:10.1190/1.1817375

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…Becquey (), see also Becquey and Becquey, Bianchi, and Meunier , extended the sweep generation technique of Wischmeyer () as they recognised that increased distortion is likely at the positions in the sweep where the sign of the code element changes. To overcome this they suggested the replacement of the standard sin function (

\sin 2 π f t

) with the function

\sin (2 π f t) (1 - \cos 2 π f t)

where f is the carrier frequency (e.g.…”

Section: Pseudorandom Sweep Designmentioning

confidence: 99%

The use of pseudorandom sweeps for vibroseis surveys

Dean¹

2013

Geophysical Prospecting

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A B S T R A C TPseudorandom vibroseis sweeps have long been suggested as an alternative to standard linear sweeps due to their potential for having superior orthogonality, a lower likelihood for infrastructure damage, and increased low-frequency content. In the past, they were also attractive as they have a better autocorrelation shape, although that is less important today. Their use has been limited but the increasing popularity of simultaneous acquisition techniques has rekindled interest as they offer the ability to reduce interference noise. A wide variety of methods for generating pseudorandom sweeps have been developed over the last 45 years. This paper gives an overview of the motivations for their use before classifying and describing the different sweep types. Finally, the sweeps will be compared in terms of their major attributes including their suitability for simultaneous surveys.

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\sin 2 π f t

) with the function

\sin (2 π f t) (1 - \cos 2 π f t)

where f is the carrier frequency (e.g.…”

Section: Pseudorandom Sweep Designmentioning

confidence: 99%

The use of pseudorandom sweeps for vibroseis surveys

Dean¹

2013

Geophysical Prospecting

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“…They can in fact be designed such that the side‐lobes of the cross‐correlations between them are minimized up to a certain time lag, which can be taken larger than the listening time. Becquey, Bianchi and Meunier (2002), Iranpour, Eriksson and Hoerlin (2007) and Sallas et al (2008) developed different methods to create pseudorandom signals. Long signals are essential for these methods to obtain low cross‐correlation lobes up to the time lags of interest in seismic exploration.…”

Section: Simultaneous Shootingmentioning

confidence: 99%

Acquisition and processing of simultaneous vibroseis data

Bagaini

2009

Geophysical Prospecting

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Numerous methods have been developed in the past three decades to speed up vibroseis acquisition. This paper gives an overview of the most promising ones and proposes a classification of them into three categories: simultaneous shooting, cascaded sweeps and slip‐sweep. The principles upon which these methods are based, the processing techniques developed to separate the simultaneously acquired data and their main features are also discussed. Finally, some criteria for the selection of the most suitable methods for the acquisition and the separation stages are proposed.

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Least-Squares Gaussian Beam Transform for Deblending Distance-Separated Simultaneous Sources

Chen

2021

IEEE Trans. Geosci. Remote Sensing

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Pseudo‐random coded simultaneous vibroseismics

Cited by 5 publications

References 2 publications

The use of pseudorandom sweeps for vibroseis surveys

The use of pseudorandom sweeps for vibroseis surveys

Acquisition and processing of simultaneous vibroseis data

Least-Squares Gaussian Beam Transform for Deblending Distance-Separated Simultaneous Sources

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