基于星间激光测距的高轨卫星定位技术研究

针对传统的高轨卫星定位技术存在定位精度低的问题,提出了基于基于星间激光测距的高轨卫星定位技术。在高轨卫星飞行器上安装低噪声激光探测器,借助激光探测器、发射机以及接收器构建星间通信链路,分析接收天线的接收功率与发射天线的发射功率之间的关系,通过激光脉冲传输空间测距与高轨卫星信号捕获接收功率和发射功率获得定位初始数据;再分析星间相对运动和修正电离层误差,得到定位数据的精确解算融合结果。选取精度因子DOP作为评判高轨卫星定位技术的参数,通过仿真实验发现高轨卫星定位技术比传统定位技术的平均DOP值高2.89,由此证明所提定位技术的定位精度更高。

Research on high orbit satellite positioning technology based on inter-satellite laser ranging

Aiming at the problem of low positioning accuracy in traditional high orbit satellite positioning technology,a high orbit satellite positioning technology based on inter-satellite laser ranging is proposed.The low noise laser detector is installed on the high orbit satellite vehicle,and the inter-satellite communication link is constructed by laser detector,transmitter and receiver.The relationship between the receiving power of receiving antenna and the transmitting power of transmitting antenna is analyzed.The initial positioning data are obtained through acquiring the receiving power and the transmitting power of high orbit satellite signal and laser pulse transmission space ranging.And then,the inter-satellite communication link is analyzed.Relative motion and correction of ionospheric errors are used to obtain accurate fusion results of positioning data.The accuracy factor DOP is selected as the parameter to evaluate high orbit satellite positioning technology.The simulation results show that the average DOP value of high orbit satellite positioning technology is 2.89 higher than that of traditional positioning technology,which proves that the positioning accuracy of the proposed positioning technology is higher.