Fast method to transform chirp envelope data into pseudo-seismic data.
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| Title: | Fast method to transform chirp envelope data into pseudo-seismic data. |
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| Authors: | Baradello, Luca1 (AUTHOR) lbaradello@inogs.it, Battaglia, Francesca1,2 (AUTHOR), Vesnaver, Aldo1 (AUTHOR) |
| Source: | Marine Geophysical Research. Jun2021, Vol. 42 Issue 2, p1-11. 11p. |
| Abstract: | Chirp technology is an acoustic tool for imaging the shallow seabed with a high resolution, used for investigations of modern to Quaternary sedimentary structures and processes and more applied goals, such as hazard surveys for drilling, archeology, geology or engineering fields. In this paper, we present new methods that improve such imaging. During the standard acquisition, the Chirp waveforms are converted into analytic signals and only their envelope is preserved and interpreted, because the highly oscillating signal is otherwise difficult to be identified visually. Doing so, however, the phase information is lost, and the final processing is limited mainly to simple time-varying gain recovery or filtering. We present a work flow including a derivative step to transform the enveloped signal into a seismic-like waveform. In this way, we can apply processing tools as FX deconvolution and migration to improve the signal/noise ratio and reduce diffractions. This method allows reviving standard and legacy Chirp data where the full-waveform information is missing. [ABSTRACT FROM AUTHOR] |
| Copyright of Marine Geophysical Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 150241863 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Fast method to transform chirp envelope data into pseudo-seismic data. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Baradello%2C+Luca%22">Baradello, Luca</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lbaradello@inogs.it</i><br /><searchLink fieldCode="AR" term="%22Battaglia%2C+Francesca%22">Battaglia, Francesca</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Vesnaver%2C+Aldo%22">Vesnaver, Aldo</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Marine+Geophysical+Research%22">Marine Geophysical Research</searchLink>. Jun2021, Vol. 42 Issue 2, p1-11. 11p. – Name: Abstract Label: Abstract Group: Ab Data: Chirp technology is an acoustic tool for imaging the shallow seabed with a high resolution, used for investigations of modern to Quaternary sedimentary structures and processes and more applied goals, such as hazard surveys for drilling, archeology, geology or engineering fields. In this paper, we present new methods that improve such imaging. During the standard acquisition, the Chirp waveforms are converted into analytic signals and only their envelope is preserved and interpreted, because the highly oscillating signal is otherwise difficult to be identified visually. Doing so, however, the phase information is lost, and the final processing is limited mainly to simple time-varying gain recovery or filtering. We present a work flow including a derivative step to transform the enveloped signal into a seismic-like waveform. In this way, we can apply processing tools as FX deconvolution and migration to improve the signal/noise ratio and reduce diffractions. This method allows reviving standard and legacy Chirp data where the full-waveform information is missing. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Marine Geophysical Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11001-021-09436-y Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 1 Titles: – TitleFull: Fast method to transform chirp envelope data into pseudo-seismic data. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Baradello, Luca – PersonEntity: Name: NameFull: Battaglia, Francesca – PersonEntity: Name: NameFull: Vesnaver, Aldo IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 00253235 Numbering: – Type: volume Value: 42 – Type: issue Value: 2 Titles: – TitleFull: Marine Geophysical Research Type: main |
| ResultId | 1 |
