机载卫通天线载波相位误差影响分析及补偿  

Influence of Airborne Satellite Communication Antenna Carrier Phase Error and Compensation

作　　者：张明军 丁鹊鹊 侯景华 赵丽 ZHANG Mingjun;DING Queque;HOU Jinghua;ZHAO Li(Unit 63629,PLA,Beijing 100162,China)

机构地区：[1]中国人民解放军63629部队,北京100162

出　　处：《无线电工程》2020年第11期951-956,共6页Radio Engineering

摘　　要：针对和差通道相位误差对机载卫通天线跟踪误差的影响,在单脉冲跟踪接收机跟踪卫星工作原理的基础上,对和差通道2路载波相位误差产生的原因进行了简要介绍,对和差通道2路载波相位误差对天线跟踪性能的影响进行了分析,提出了采用标定法和移相法对载波相位的补偿方法,建立了和差通道相差修正模型。以某型机载卫通跟踪接收机为例,验证了通过调整接收机中频相位值来改善天线交叉耦合性能的有效性,结果表明,所提方法可有效减少天线交叉耦合和跟踪误差。To solve the problem of the influence of sum-difference channel phase error on airborne satellite communication antenna tracking error,the causes of sum-difference channel’s two-carrier phase error are briefly introduced based on the working principles of the tracking satellite with mono pulse tracking receiver.The influence of two-carrier phase error of sum-difference channel on the antenna tracking performance is analyzed.The calibration method and the phase-shift method are put forward to compensate the carrier phase and the sum-difference channel difference correction model is established.An airborne satellite communication tracking receiver is taken as an example to verify that the antenna cross-coupling performance effectiveness can be improved by adjusting the receiver’s intermediate frequency phase value.The result shows that the proposed method can effectively reduce the antenna cross-coupling and tracking error.

关 键 词：附加相移 跟踪误差 移相法 标定法 跟踪精度 

分 类 号：TN927.21[电子电信—通信与信息系统]