Abstract
In this paper, the 90Sr/90Y coating effects on scattering width (SW) of cylindrical conductor targets are investigated. The electron density distribution of plasma around cylindrical targets of different radiuses is simulated under different radioactivities in normal or oblique incidence. In normal incidence, the SWs are examined as functions of frequency and scattering angle; while in oblique incidence, the SW is inspected as a function of incident angle at the frequency of 1.5 GHz. The results obtained are compared with those from an ideal perfect electric conductor (PEC) cylinder. It is demonstrated that the SW decreases over a wide frequency range in the back scattering region by coating a 90Sr/90Y layer on the cylindrical target. Moreover, the reduction in bi-static SW amplitude can reach 3–20 dB, when the incident angle is smaller than 30° at 1.5 GHz. It is a significant improvement in the stealth effect.
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