Copyright © 2007, Springer Berlin HeidelbergPoyatos Martínez, D.Escot Bocanegra, D.Montiel, I.Olmeda, I.2022-09-262022-09-262007-05-14Nature inspired Problem Solving Methods in Knowledge Engineering 4528: 1029978-3-540-73054-5https://link.springer.com/chapter/10.1007/978-3-540-73055-2_25http://hdl.handle.net/20.500.12666/811Identification of aircrafts by means of radar when no cooperation exists (Non-Cooperative Target Identification, NCTI) tends to be based on simulations. To improve them, and hence the probability of correct identification, right values of permittivity and permeability need to be used. This paper describes a method for the estimation of the electromagnetic properties of materials as a part of the NCTI problem. Different heuristic optimization algorithms such as Genetic Algorithms (GA) and Particle Swarm Optimization (PSO), as well as other approaches like Artificial Neural Networks (ANN), are applied to the reflection coefficient obtained via free-space measurements in an anechoic chamber. Prior to the comparison with real samples, artificial synthetic materials are generated to test the performance of these bio-inspired algorithms.engNCTIANNGAPSOPermittivityPermeabilityFree-space measurementsinfo:eu-repo/semantics/article10.1007/978-3-540-73055-2_25info:eu-repo/semantics/restrictedAccess