The affiliation of the authors in the above article was incorrect. The correct version is given below:
Jean-Rémi Dujardin, Maksim Bano*
Institut de physique du globe de Strasbourg, CNRS–UDS, UMR 7516, (université de Strasbourg/EOST), 5, rue René-Descartes, 67084 Strasbourg cedex, France
Moreover, reference Annan, 1991 should read:
Annan, A.P., 2011. Topographic corrections of GPR data. Sensors&Software Inc. Technical Note.