摘要
介绍了卫星测控站天线控制子系统的工作原理,给出了伺服控制系统框图,和大地坐标转换公式。通过推导从卫星下行信号中提取角跟踪方位、俯仰控制电压的公式,分析了目标在天线波束宽度内偏移与误差电压产生的线性关系,因此可以通过电压负反馈实现伺服天线对目标卫星的自引导式跟踪。最后采用虚拟仪器软件LabVIEW设计仿真实验,模拟了卫星天线角跟踪的工作原理。
This paper introduces briefly the operation principle of antenna control subsystem in satellite TT＆C station, and presents the block diagram of servo control system and the formula of earth-coordinate transform. By deriving the formulas for extracting the angular tracking azimuth and elevation control voltage from the down-link signals of satellite, we analyze the linear relations between the deviation of target in the antenna beam width and error voltage. The analysis results show that the automatic guided tracking for target satellite can be implemented by servo antenna via voltage negative feedback. Finally, we use virtual instrument software LabVIEW to design the simulation experiment to simulate the operation principle of angular tracking of satellite antenna.
出处
《无线电通信技术》
2010年第1期37-39,共3页
Radio Communications Technology
作者简介
郑佳（1979-），女，研究生在读，电路与系统专业。主要研究方向：EDA与专用大规模集成电路设计。
