摘要
针对阵元不规则排列的N层环形阵波束控制算法进行了研究.通过分析不规则阵元波束控制理论,在球坐标系下推导了波束控制码与最大波束指向的计算过程,并进行了坐标系的转换,建立了天线阵模型.提出了一种基于角度码与径向码相结合的波束控制算法,设计了控制码分配准则,评估波束跃度与阵列入射波仰角之间的关系.结果表明:采用该算法分配控制码与均匀分配法相比,具有较低的最大波束指向误差与较低的最小波束跃度,可满足目标精密跟踪测量的应用.
The beam control algorithm was studied in N-layer circular array with irregular arrangement. Through the analysis of irregular array beam control theory, the calculation of beam control code and the maximum beam direction, and the conversion of the coordinate system of the antenna array model were derived in the spherical coordinate system. A beam control algorithm based on the combination of angle codes and radial codes was proposed. Principle of control code assignment was designed. Relation between granularity of beam and elevation angle of incidence was evaluated. Results indicate that compared with uniform method, a lower difference and a smaller granularity of beam can be achieved using control code beam algorithm, which can satisfy the application of measurement of precise target track.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第9期12-15,共4页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(61072092)
关键词
相控阵
环形阵
不规则阵
控制码
波束跃度
phased arrays
loop antennas
irregular array
control code
granularity of beam
