Background subtraction in the frequency domain for focusing ground-penetrating radar data

0, Lopera*+, S. Lambott, N. Milisavljevic*, B. Scheers* and 1. van den Bosch*§ 'Royal Military Academy, Signal and Image Centre AV. de la renaissance 30, 10oO Brussels, Belgium olopera@elec.rma.ac.be, nada@elec.rma.ac.be, scheers@tele.rma.ac.be b e p t . of Electrical and Electronic Engineering, University of Los Andes Kra 1 Este l8A-10, Ed W P4, Bogota, Colombia olopera@uniandes.edu.co $Department of Geotechnology, Delft University of Technology Mijnbouwstmat 120,2628 RX Delft, The Netherlands s.lambot@citg.tudelf.nl §Microwaves Laboratory, Catholic University of Louvah Place du Levant 3, I348 Louvah-la-Neuve, Belgium vandenbosch @emic.ucl.ac.be

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