Effects of cavity on RCS of cylinder coated with microwaves absorbing material

2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2015-11-01 DOI:10.1109/IMOC.2015.7369223

Samuel M. L. da Silva, M. C. Rezende, Alberto J. Orlando Faro, Newton A S Gomes

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引用次数: 1

Abstract

A cylinder with 2.5m of length and 0.15 m of diameter had its RCS (radar cross section) measurement performed. Subsequently, its RCS was reduced with microwave absorbing material. It was studied what the impact to the RCS of the target after transform the cylinder coated with material into a cylindrical cavity. The absorber material behavior was evaluated under the strain of a cylindrical curvature compared to the initial characterization data held in flat surface. Thus, was obtained about 20 dBsm (side) and 6 dBsm (bases) for the RCS of the cylinder. The material with 18 dB absorption capacity presented 14 dB in the case of cylindrical target, a result considered satisfactory, since this value was limited by the baseline scattering present in the “setup”. It was observed that, even subject to the stresses of curvature, the material showed no plastic deformation or cracking. Finally, it was found that the reduced RCS (360°) of the cylindrical cavity was increased in relation to the reduced RCS of the cylinder.

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空腔对吸波材料涂层圆柱体RCS的影响

对长2.5m、直径0.15 m的圆柱体进行RCS(雷达截面)测量。然后用吸波材料降低其RCS。研究了将包覆材料的圆柱体转变为圆柱形空腔后对靶体RCS的影响。在圆柱形曲率的应变下评估吸收材料的行为，并与在平面上保存的初始表征数据进行比较。因此，圆柱的RCS约为20 dBsm(侧)和6 dBsm(基)。具有18db吸收能力的材料在圆柱形目标的情况下呈现14db，这被认为是令人满意的结果，因为该值受到“设置”中存在的基线散射的限制。观察到，即使受到曲率应力，材料也没有塑性变形或开裂。最后，发现圆柱腔的减小RCS(360°)相对于圆柱腔的减小RCS有所增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)

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