基于图着色理论的阵列天线校正方法  

Method of phased array antenna calibration based on graph coloring theory

作　　者：高卫斌[1] 党锐锐 杨李杰 GAO Weibin;DANG Ruirui;YANG Lijie(Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China;Marine Electronics and Intelligent System Laboratories, Zhejiang University, Zhoushan 316021, China)

机构地区：[1]北京跟踪与通信技术研究所,北京100094 [2]浙江大学海洋电子与智能系统研究所,舟山316021

出　　处：《遥测遥控》2019年第3期1-10,共10页Journal of Telemetry,Tracking and Command

摘　　要：由于受环境变化影响,大规模平面相控阵天线收发通道的幅相一致性会发生偏移,常常需要标校才能保证其正常工作,但目前阵列天线收发通道数量较多,校正过程复杂,而且费时费力。基于图着色理论提出一种阵列天线快速校正方法,将校正时隙分配转化为图论中的着色问题,通过最小化时隙着色提高每个校正时隙的复用率,以降低阵列通道校准次数,达到缩短全阵列校正时间目的。仿真表明,对正六边形、正方形和正三角形平面阵列,分别最多仅需要8个、9个和16个时隙就可完成全阵列校正。Phased array radars are able to provide highly accurate surveillance and tracking performance if they are properly calibrated. However, the ambient temperature variation and device aging could greatly deteriorate their performance.Currently, performing a calibration over a large-scale phased array with thousands of antennas is time consuming. To facilitate the process, we propose a fast calibration method for phased arrays based on the graph coloring theory. This method transforms the calibration problem into a coloring problem that aims at minimizing the number of used colors. By reusing the calibration time slots spatially, more than one antenna can perform calibration simultaneously. The simulation proves the total calibration time slots consumed by the proposed method are 8, 9 and 16 for arrays with hexagonal topology, square topology and triangular topology, respectively.

关 键 词：图着色理论 阵列校正 平面相控阵 幅度相位误差 

分 类 号：TN952[电子电信—信号与信息处理]