摘要
文中提出了一种基于两轴座架结构的低成本车载卫星通信天线跟踪技术。首先介绍了该座架结构形式,分析了其特点,介绍了横摇轴对系统性能的影响,推导出了其空间对星三轴计算补偿公式,在此基础上进一步对跟踪误差进行了仿真分析,说明了补偿的必要性。还对系统一些关键技术如传感器卡尔曼滤波、圆锥扫描跟踪进行了介绍。工程实际应用表明,该项跟踪技术跟踪卫星信标信号稳定,达到了系统设计要求。
A kind of antenna tracking technology for low-cost vehicle-mounted satellite communication is proposed based on two-axes mounted structure. The form of the structure is introduced, its features are an- alyzed, the influence of the roll axis on the system performance is described, and the compensation formula for star-axis calculating is derived. Simulation and analysis results on tracking error illustrate the necessity of the compensation. Also some key technologies, such as Kalman filter of sensor and conical scan tracking are discussed. The practical application shows that it is stable to track the beacon signal by the satellite tracking technology, thus meeting the requirements of the system design.
出处
《南京邮电大学学报（自然科学版）》
北大核心
2014年第5期80-86,共7页
Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition
关键词
车载卫星通信
两轴座架结构
横摇轴
对星补偿
卡尔曼滤波
圆锥扫描跟踪
vehicle-mounted satellite communication
two-axes mounted structure
roll axis
compensation for star
kalman filter
conical scan tracking
