Resonances of complex shape scattering objects: Modelling by resonant circuits

In resonance domain, the radar scattering response of any object can be modelled by natural poles of resonance with the formalism of the Singularity Expansion Method (SEM). The mapping of poles gives useful information for the discrimination of radar targets. In this paper, we propose to use resonant circuits modelling to characterize the resonance behavior of complex shape targets from the quality factor Q and the natural pulsation of resonance ¿0. For perfectly conducting (PC) canonical and complex shape targets, we present results exhibiting advantages of these two parameters {¿0 ; Q}.