角反射器在太赫兹波段的散射特性研究

Scattering characters of the corner reflectors in THz band

太赫兹雷达散射特性的研究对于目标识别、跟踪以及截获有重要意义.设计了0.22 THz频率步进雷达散射截面(Radar Cross section,RCS)测量系统,提出了针对频率步进太赫兹雷达信号体制下,角反射器RCS的提取方法.采用实验与仿真相结合的方式,得到了单个角反射器和角反射器组在4°范围内的太赫兹雷达散射截面.结果表明,角反射器类目标的RCS实验测量结果与理论计算结果在误差范围内一致性较好,为进一步精确测量目标在太赫兹波段的散射特性奠定了研究基础.

The study of terahertz radar scattering characteristics is important for target identification,tracking,and interception. A 0. 22 THz stepped-frequency Radar Cross Section（ RCS） measurement system is designed,and the RCS extraction method is also proposed. Using the combination of experiments and simulations,the terahertz radar cross section of a single corner reflector and corner reflector group within 4° is obtained. The results show that the RCS experimental results and the theoretical calculation results of the corner reflector target are in good agreement within the error range,which lays the foundation for further accurate measurement of the scattering characteristics of the target in the THz band.