CAJ | 학술논문

针对传统角反射器的性能强烈依赖于入射波长、难以对抗变频雷达的探测这一问题,设计了一种加载超材料吸波体的新型角反射器,在8 GHz、11.5 GHz 以及12 GHz 这3个频点,产生近似相同的后向雷达散射截面,并对该角反射器的性能进行测试验证,结果表明：加载超材料吸波体后,在11.5 GHz 频点,其中心 RCS 值下降约2 dBsm；在12 GHz 频点,其中心 RCS 值下降约3.6 dBsm,在8 GHz 频点,其 RCS 值与普通角反射器一致,两者的 RCS 曲线无明显差别。该新型角反射器性能满足设计要求,为有效对抗 X 波段(8~12 GHz)变频雷达对角反射器假目标的探测与识别尝试了新的途径。
침대전통각반사기적성능강렬의뢰우입사파장、난이대항변빈뢰체적탐측저일문제,설계료일충가재초재료흡파체적신형각반사기,재8 GHz、11.5 GHz 이급12 GHz 저3개빈점,산생근사상동적후향뢰체산사절면,병대해각반사기적성능진행측시험증,결과표명：가재초재료흡파체후,재11.5 GHz 빈점,기중심 RCS 치하강약2 dBsm；재12 GHz 빈점,기중심 RCS 치하강약3.6 dBsm,재8 GHz 빈점,기 RCS 치여보통각반사기일치,량자적 RCS 곡선무명현차별。해신형각반사기성능만족설계요구,위유효대항 X 파단(8~12 GHz)변빈뢰체대각반사기가목표적탐측여식별상시료신적도경。
In view of the problem that the performance of the traditional corner reflector is strongly depend-ent on the incident wavelength which makes it difficult to avoid the detection of frequency conversion ra-dar,this paper designs a new corner reflector loaded with meta-material wave-absorbing layer,which cre-ates approximately the same backward radar cross sections respectively at frequency points of 8 GHz , 1 1.5 GHz and 12 GHz.The test on the performance of the corner reflector shows that after the loading meta-materials absorbing layer is processed,the RCS value is decreased by about 2 dBsm at 1 1.5 GHz and decreased by about 3.6 dBsm at 12 GHz,and its RCS curve and the value of the common corner reflector are almost the same at 8 GHz.With no significant difference between the RCS curves of two frequency points,the performance of the new corner reflector meets the design requirements,thus providing a new approach for the countermeasure against the detection and identification of frequency conversion radar which works at the X band wave (8~12 GHz)to the corner reflector false target.