Data Interpolation Beyond Aliasing

dc.contributor.author	Volker, Arno
dc.contributor.author	Neer, Paul
dc.date	2018-02-17T22:33:29.000
dc.date.accessioned	2020-06-30T06:53:50Z
dc.date.available	2020-06-30T06:53:50Z
dc.date.issued	2016-01-01
dc.description.abstract	<p>Proper spatial sampling is critical for many applications. If the sampling criterion is not met, artifacts appear for example in images. Last year an iterative approach was presented using wave field extrapolation to interpolate spatially aliased signals. This main concept behind this approach is that after inverse wave field extrapolation the signal is concentrated in a small region with a high amplitude, while the aliasing artifacts are spread-out through the domain. Inverse wave field extrapolation focusses optimally at one depth, making the performance of the reconstruction depth dependent. Obviously the method can be repeated for several depths. This year we show an alternative approach using an imaging/inverse-imaging approach. The demonstration of this approach is extended to 2D-arrays where the sampling limitations are even more critical. Moreover we show in this paper that the interpolation approach is not limited to near-field data, but can also be used on far-field data (plane waves). The Radon transform can be used for plane waves to focus the data. The approach is demonstrated using modeled and measured data for linear and 2D arrays.</p>
dc.format.mimetype	application/pdf
dc.identifier	archive/lib.dr.iastate.edu/qnde/2016/abstracts/270/
dc.identifier.articleid	4883
dc.identifier.contextkey	9228254
dc.identifier.s3bucket	isulib-bepress-aws-west
dc.identifier.submissionpath	qnde/2016/abstracts/270
dc.identifier.uri	https://dr.lib.iastate.edu/handle/20.500.12876/62028
dc.language.iso	en
dc.source.bitstream	archive/lib.dr.iastate.edu/qnde/2016/abstracts/270/088_Data_Interpolation.pdf\|\|\|Fri Jan 14 23:06:13 UTC 2022
dc.subject.disciplines	Mathematics
dc.subject.disciplines	Signal Processing
dc.subject.disciplines	Statistics and Probability
dc.title	Data Interpolation Beyond Aliasing
dc.type	event
dc.type.genre	event
dspace.entity.type	Publication

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