| 摘要: |
| 针对高端低轨信关站对Q/V频段卫星信号高质量接收的需求，研制了一款Q/V频段三轴天线系统，解决了天线系统高频段卫星信号的收发共用和自动跟踪的技术难题。提出了高精度天线结构优化设计、多模自适应角度零值指向控制两大关键技术，在此基础上开发了一款高精度、低成本的Q/V频段三轴4.5 m反射面天线样机，并完成相关的测试和试验验证，实现了Q/V频段信号高可靠接收和高精度过顶跟踪。所设计的天线样机增益、噪温、差波束零深、指向精度、跟踪精度等指标均满足设计要求，跟踪精度可达0.008 3°且优于1/10倍半功率波束宽度，对高频段天线的设计具有重要的借鉴意义。 |
| 关键词: 遥感卫星 Q/V频段反射面天线 过顶跟踪 |
| DOI：10.20079/j.issn.1001-893x.240315004 |
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| 基金项目: |
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| Design and Implementation of a Q/V Band Triaxial Antenna System |
| LIU Jianquan,WANG Xiaoqiang,JIANG Likun |
| (1.The 54th Research Institute of China Electronics Technology Group Corporation，Shijiazhuang 050081，China;2.Hebei Branch，China Communications System Co.，Ltd.，Shijiazhuang 050081,China) |
| Abstract: |
| According to the requirements of high-quality reception in the Q/V band of satellite signals，a Q/V band triaxial three-axis antenna system is developed which solves the technical problems of satellite signals transmit-receive sharing and automatic tracking in the high frequency band of the antenna system.The key techniques are proposed,including high-precision antenna structure optimization design，large dynamic and narrow beamwidth tracking-pointing control.A high-precision and low-cost Q/V band triaxial 4.5-meter reflector antenna prototypes is developed and tested,and the high quality reception and the high precision automatic tracking of Q/V band satellite signals are realized.The on-site electrical test and satellite tracking test results show the antenna gain，noise temperature，difference beam nulling depth，poining accuracy，and tracking accuracy of the prototype meet the design specifications.The tracking accuracy reaches 0.008 3 ° and is better than 1/10 times the half-power beam width.The proposed design method can provide reference for the development of high frequency antennas. |
| Key words: remote sensing satellite Q/V band reflector antenna overhead tracking |
