摘要
针对均匀圆阵天线的阵列布局,建立了天线阵列对信号的接收模型,提出了一种实用的直接加权波束合成技术。在分析了系统误差来源并修正了系统误差校准模型的基础上,给出了详细的波束合成理论推导。结合实际系统给出了工程上的具体实现,并运用正交校准技术对由设备通路引起的系统误差进行校准。对该算法进行计算机仿真验证其可行性,并与实际效果图进行比较,指出算法的优点和不足。所给出的理论和方法都通过了工程检验,具有一定的实用性。
A signal receipt mode of antenna array is established for the direction-tinding architecture ot certain uniform circular antenna array. And an applicable Digital Beamforming algorithm is proposed. On analyzing system errors sources and revising the sys- tematical errors calibration mode, a detailed theoretical inference is presented. Specific engineering implementation is provided. And sys-tematical errors caused by the channel ununiformity are corrected in virtue of the orthogonal transformation. Computer simulation results verified the feasibility of this algorithm. Comparison with actual effect diagram shows the advantages and disadvantages of this algorithm. All theory and methods are proved through actual engineering and this algorithm provides pretty good applicability.
出处
《无线电工程》
2012年第9期32-33,37,共3页
Radio Engineering
关键词
直接加权
波束合成
均匀圆阵
误差校准
digital coefficients
beamforming
uniform circular antenna array
errors calibration
