根据空间精密定位技术需求,提出一种空间四象限概念,用于空间载体主动定位引导与高速通信。在固定的时间间隔内,通过光束扫描方式在空间依次形成4个光斑,接收探测器依次接收4个光斑的部分能量,按质心计算原理解算接收端相对于发射中心的位置及角度偏移。应用蒙特卡罗方法对空间四象限定位系统进行建模与仿真,并搭建实验系统对仿真结果进行验证与分析。结果表明,空间四象限定位方法可行,可为空间定位、导航等具体应用提供技术支持。

In this study, we propose a space four-quadrant concept to realize active positioning guidance and high-speed communication of the space carriers according to the requirement of space precise positioning technology. Four light spots are sequentially obtained in space within fixed time interval using the beam scanning method. The receiving detector sequentially receives the partial energy of the four light spots and calculates the position as well as offset angle of the receiving end with respect to the transmitting center based on centroid calculation. Further, the Monte Carlo method is used to model and simulate the space four-quadrant limited positioning system, and an experimental system is developed to verify and analyze the simulation results. The results denote that the space four-quadrant positioning technology is feasible and can provide technical support for specific space positioning and navigation applications.