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由于航天测控飞机的飞行特性复杂、天线波束宽度窄、需进行极化跟踪 ,并且对跟踪精度具有很高要求 ,因此天线跟踪是航天测控飞机卫星移动通信设备研制的关键技术难点。文中对测控飞机天线跟踪的难点进行了详细分析 ,综合比较了圆锥扫描跟踪、程序跟踪、单脉跟踪和步进跟踪等几种常见卫星通信天线跟踪体制对机载环境的适应性能 ,指出测控飞机卫星移动通信天线跟踪采用程序跟踪和单脉冲自跟踪相结合的方式是切实可行的。文章还对测控飞机天线跟踪系统的具体实现进行了阐述并分析了影响天线跟踪精度的主要因素。
Due to the complex flight characteristics of aerospace control aircraft and the narrow beamwidth of the antenna, polarization tracking is required and high tracking accuracy is required. Therefore, antenna tracking is a key technical difficulty in the development of satellite mobile communications equipment for aerospace monitoring and control aircraft. In this paper, the difficulty of tracking and controlling aircraft antenna is analyzed in detail. The adaptability of several common satellite communication antenna tracking systems such as cone scanning, program tracking, monopulse tracking and step tracking to airborne environment are comprehensively compared. It is pointed out that the measurement and control aircraft Satellite mobile communication antenna tracking using program tracking and single-pulse self-tracking approach is feasible. The article also elaborates the concrete realization of the monitoring and control plane antenna tracking system and analyzes the main factors that affect the tracking accuracy of the antenna.