Interferometric methods are well known for retrieving the reflection response of a virtual source at a physical receivers location. The position of the sources does not have to be known for this. Interferometry by multidimensional deconvolution can even be used in dissipative media, and is therefore of interest for GPR applications. It gives an accurate estimation, both spatially and temporally, of the reflection response, and can especially be useful in monitoring applications and in cases where it is not possible to place a source for GPR measurements. The reflection response due to a virtual source at a receiver position can be retrieved using band-limited synthetic noise with a centrum frequency around the mobile phone frequency.

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