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dc.contributor.authorBorcea, Liliana
Garnier, Josselin
Papanicolaou, George
Tsogka, Chrysoula
dc.date.accessioned 2018-06-19T17:46:08Z
dc.date.available 2018-06-19T17:46:08Z
dc.date.issued 2010-12
dc.identifier.citation Borcea, Liliana, Garnier, Josselin, Papanicolaou, George, et al.. "Coherent Interferometric Imaging, Time Gating and Beamforming." (2010) https://hdl.handle.net/1911/102174.
dc.identifier.urihttps://hdl.handle.net/1911/102174
dc.description.abstract Coherent interferometric imaging is based on the backpropagation of local space-time cross correlations of array data and was introduced in order to improve images when the medium between the array and the object to be imaged is inhomogeneous and unknown [Borcea et al., Inverse Problems, 21 (2005), 1419]. Although this method has been shown to be effective and is well founded theoretically, the coherent interferometric imaging function is computationally expensive and therefore difficult to use. In this paper we show that this function is equivalent to a windowed beamformer energy function, that is, a quadratic function that involves only time gating and time delaying signals in emission and in reception. In this form the coherent interferometric imaging can be implemented efficiently both in hardware and software, that is, at a computational cost that is comparable to the usual beamforming and migration imaging methods. We also revisit the trade-off between enhanced image stability and loss of resolution in coherent interferometry from the point of view of its equivalence to a windowed beamformer energy imaging function.
dc.format.extent 16 pp
dc.title Coherent Interferometric Imaging, Time Gating and Beamforming
dc.type Technical report
dc.date.note December 2010
dc.identifier.digital TR10-33
dc.type.dcmi Text


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