基于信标和DVB信号的对星伺服控制系统

Design of Aiming Satellite Servo Control System Based on Beacon Signal and DVB Signal of Satellite

针对目前单一的信标信号对星方式,提出一种基于卫星信标信号和卫星DVB信号的对星伺服控制系统设计,它通过参照卫星信标信号和DVB信号强度,利用数字罗盘以及电位器等传感器来感知接收天线的姿态,以PIC单片机为运算核心进行天线指向角度,极化角度运算,驱动天线转动,使其高精度对准指定卫星发射波束,实现卫星通信。不仅给出了整个控制部分原理框图、工作原理,还给出了卫星粗对准算法、信号最大值定位算法。该双信号对星方式进一步提高了对星伺服控制系统的可靠性,拓展了适用卫星范围,经过实验验证,对星效果良好。

Due to the current aiming satellite method is only based on the beacon signal, a new aiming satellite serve control system, which is depended on both the beaeon signal and the DVB signal of the satellite, is proposed. By referencing the strength of the beacon signal and the DVB signal of the satellite and perceiving the posture of the receiving antenna using sensors, i.e., digital compass and potentiometers, antenna pointing angle and polarization angle are calculated by the PIC single chip computer. Then the antenna can be driven to accurately turn to specify satellite transmitting beam, and satellite communication is implemented. Not only the diagram of the whole control system and the work theory, but also the coarse alignment algorithm and signal maximum positioning algorithm are proposed in this paper. The dual signal aiming satellite method improves the reliability of the aiming satellite serve eontrol system and enlarges the range of applicable satellite. And it is shown by experiment that the system has good performance of aiming satellite.