Vector Fitting–Cauchy Method for the Extraction of Complex Natural Resonances in Ground Penetrating Radar Operations

In this paper, we obtain the Complex Natural Resonances of an object from backscattered response in frequency domain with a novel rational function approximation method based on both Vector Fitting and Cauchy methods. We determine system order initial set poles, which are used as basis for approximation. The results simulations experiments show improvement reconstructed signals accuracy CNRs calculated, increased tolerance to critical Signal-to-Noise Ratio. This is being problem GPR landmine humanitarian detection Colombia.