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van der Neut, J.R. (author), Fokkema, J.T. (author), van den Berg, P.M. (author), Zapf, Michael (author), Ruiter, Nicole V. (author), Taskin, U. (author), van Dongen, K.W.A. (author)Synthetic-aperture (SA) imaging is a popular method to visualize the reflectivity of an object from ultrasonic reflections. The method yields an image of the (volume) contrast in acoustic impedance with respect to the embedding. Typically, constant mass density is assumed in the underlying derivation. Due to the band-limited nature of the...journal article 2019
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Wavefield decomposition based on acoustic reciprocity: Theory and applications to marine acquisitionVan Borselen, R.G. (author), Fokkema, J.T. (author), Van den Berg, P.M. (author)In marine seismic acquisition, the free surface generates seismic events in our recorded data that are often categorized as noise because these events do not contain independent information about the subsurface geology. Ghost events are considered as such noise because these events are generated when the energy generated by the seismic source,...journal article 2013
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Hagen, C.W. (author), Fokkema, E. (author), Kruit, P. (author)The virtual source size of a liquid metal ion source is an order of magnitude larger than the size of the region from which the ions are emitted at the source. This source size has a direct effect on the reduced brightness and, hence, on the performance of these sources. The variation of the virtual source size of a gallium liquid metal ion...journal article 2008
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Wapenaar, C.P.A. (author), Fokkema, J. (author), Snieder, R. (author)We compare two approaches for deriving the fact that the Green’s function in an arbitrary inhomogeneous open system can be obtained by cross correlating recordings of the wave field at two positions. One approach is based on physical arguments, exploiting the principle of time-reversal invariance of the acoustic wave equation. The other approach...journal article 2005
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- Barens, L.M. (author), Van Borselen, R.G. (author), Fokkema, J.T. (author), Van den Berg, P.M. (author) conference paper 1995
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- Vos, J. (author), Cremers, B.B. (author), Drijkoningen, G.G. (author), Fokkema, J.T. (author) conference paper 1995
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- Ter Doest, P.J.K. (author), Vercruijsse, P.A. (author), Fokkema, J.T. (author) conference paper 1993
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- Tatalovic, R. (author), Dillen, M.W.P. (author), Fokkema, J.T. (author) conference paper 1991
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- Vissinga, M. (author), Fokkema, J.T. (author) conference paper 1991
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- Vercruijsse, P.A. (author), Fokkema, J.T. (author) conference paper 1991
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- Van Borselen, R.G. (author), Thorbecke, J. (author), Fokkema, J.T. (author), Van den Berg, P.M. (author) conference paper 1991
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- Tatalovic, R. (author), Fokkema, J.T. (author) conference paper 1991
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- Kremer, S.R.G. (author), Fokkema, J.T. (author), Wapenaar, C.P.A. (author) conference paper 1991
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- Koster, J.K. (author), Ziolkowski, A.M. (author), Fokkema, J.T. (author), Tatalovic, R. (author), Tijdens, E. (author) conference paper 1990
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- Stoffa, P.L. (author), Sen, M.K. (author), Fokkema, J.T. (author), Kessinger, W. (author) conference paper 1990
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- Baeten, G.J.M. (author), Fokkema, J.T. (author), Ziolkowski, A.M. (author) conference paper 1989