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The wideband electromagnetic characteristics of missile targets in midcourse are the foundation of midcourse attack-defense confrontation.This paper proposes a novel electromagnetic scattering modeling method for midcourse targets based on a precise scattering center model,in which the nonideal scattering phenomenon,shielding effect and micro-motion are taken into consideration for the first time.Firstly,a precise scattering center model incorporating both the sliding scattering and anisotropic scattering is established.Then the change rule of the target attitude is generalized,and a checking method of the scattering center shielding effect is proposed for rotationally symmetric targets.Afterwards,a novel dynamic electromagnetic scattering model is presented,where the scattering center model updates along with the variation of the target attitude and can characterize the change of the electromagnetic characteristics of midcourse targets exactly.Finally,in light of the established model,the dynamic electromagnetic characteristics within different attitude angle bounds are analyzed by stages,and some useful conclusions are obtained.Experiment results from the measured data in anechoic chamber verify the validity of the proposed modeling method and relevant analysis.
The wideband electromagnetic characteristics of missile targets in midcourse are the foundation of midcourse attack-defense confrontation. This paper proposes a novel electromagnetic scattering modeling method for midcourse targets based on a precise scattering center model, in which the nonideal scattering phenomenon, shielding effect and micro -motion are taken into consideration for the first time. Firstly, a precise scattering center model incorporating both the sliding scattering and anisotropic scattering is established. Chen the change rule of the target attitude is generalized, and a checking method of the scattering center shielding effect is proposed for rotationally symmetric targets. Afterwards, a novel dynamic electromagnetic scattering model is presented, Where the scattering center model updates along with the variation of the target attitude and can characterize the change of the electromagnetic characteristics of midcourse targets exactly. Finally, in light of the established model , the dynamic electromagnetic characteristics within different attitude angle bounds are analyzed by stages, and some useful conclusions are obtained. Experimental results from the measured data in anechoic chamber verify the validity of the proposed modeling method and relevant analysis.