套筒天线组成的宽带干涉仪测向圆阵研究  

Research of the Circular Array for Interferometer Direction Finder Formed by Sleeve Monopole Operating in Wide Bandwidth

作　　者：何山红[1] 谢继东[2] 

机构地区：[1]南京电子技术研究所,南京210013 [2]南京邮电学院通信工程系,南京210003

出　　处：《宇航学报》2006年第2期250-255,共6页Journal of Astronautics

基　　金：十四所预研课题MF-9905

摘　　要：为提高宽带干涉仪测向圆阵性能,首次提出了利用套筒天线代替常规加载宽带偶极子作为测向阵列单元。利用Fourier变换结合矩量法分析了套筒天线组成的测向圆阵的电磁特性,并利用HFSS软件对部分仿真结果进行了验证。在得出阵列电磁特性的基础上再运用基于空间距离的相关数据处理方法统计分析了测向圆阵性能。研究结果表明,相对于常规测向圆阵,由于套筒天线构成的测向圆阵增益高、消除了广义谐振现象,使测向圆阵的灵敏度、测向精度均得到较大提高。相应地模糊度减小、稳健性能增强。To improve the performance of the circular array for interferometer direction finder operating in wide bandwidth, a novel circular array is proposed in this paper firstly, in which sleeve dipole replaces the loaded dipole usually used as unit of this array. Electromagnetism characteristic of this novel circular array is analyzed by the hybrid method combining Transform of Fourier and Method of Moment. Some simulative results are contrasted by the software named HFSS. Using correlation method for data processing based on spatial space with the electromagnetism characteristic of this array, the statistical characteristics for interferometer direction finder of this circular array are also analyzed. Statistical simulative results illustrate that the array formed by sleeve monopoles has higher gain and avoid the generalized resonance compared to the conventional one, so sensitivity and resolution for interferometer direction finder is improved, ambiguity is reduced and robust characteristic is enhanced accordingly.

关 键 词：套筒天线 干涉仪测向圆阵 矩量法 FOURIER变换 相关数据处理 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计]