Experimental evaluation of an array GPR for landmine detection

This paper presents an experimental evaluation procedure for a landmine detection GPR with a single transmit antenna and a receive antenna array. The procedure includes calibration of the ultra-wideband array, estimation of its footprint and cross-range resolution for different size of the aperture, checking the capability to image landmines buried within the array aperture. For the evaluation, the authors developed an imaging algorithm combining a synthetic aperture focusing in the mechanical scan direction with a focusing of the array in the cross-scan direction.