一种星载相控阵多波束高精度校准方法  

A High-precision Multi-beam Calibration Method forSpaceborne Phased Array

作　　者：罗志勇 杨麒令 林秋华 LUO Zhiyong;YANG Qiling;LIN Qiuhua(School of Electronics and Communication Engineering,Sun Yat-sen University Shenzhen Campus,Shenzhen 518107,China)

机构地区：[1]中山大学深圳校区电子与通信工程学院,广东深圳518107

出　　处：《无线电通信技术》2024年第6期1131-1136,共6页Radio Communications Technology

基　　金：国家重点研发计划(2021YFB2900401);广东省重点研发计划(2024B0101020006)。

摘　　要：星载相控阵由于其电子波束形成的灵活性,在卫星通信发挥着重要作用。而星载相控阵在发射前往往需要经过静态校准,在传统旋转矢量法的基础上,提出了一种新型的高精度相控阵校准方法——旋转元件电场矢量和振幅归零(Rotating-element Electric-field Vector and Amplitude Zeroing,REV-AZ)。在幅度校准中,通过改变阵元激励的相位,给出了更简洁准确的幅度误差计算公式。在相位校准中,通过将阵列激励值置零,求出每个阵元的相位误差。多波束校准仿真实验表明,REV-AZ法具有较好的校准效果,对星载相控阵天线系统稳定、高效运行具有重要意义。Space-borne phased arrays play an important role in satellite communications because of their flexibility in electronic beamforming.Spaceborne phased arrays often require static calibration prior to launch.Based on traditional Rotating-element electric-field vector method,a new high-precision phased array calibration method,Rotating-element Electric-field Vector and Amplitude Zeroing(REV-AZ),is proposed.In amplitude calibration,a more concise and accurate formula for calculating the amplitude error is given by changing the phase of the element excitation.In phase calibration,the phase error of each element is obtained by setting the excitation value of the array to zero.Multi-beam calibration simulation results show that the REV-AZ method has a good calibration effect and is of great significance for the stable and efficient operation of a satellite phased array antenna system.

关 键 词：天线阵列 相控阵校准 波束形成 幅相误差 

分 类 号：TN927[电子电信—通信与信息系统]