一种BDS/GPS/GLONASS融合精密单点定位方法

给出了一种基于 BDS/GPS/GLONASS 融合的精密单点定位方法，统一了三系统组合精密定位的时间系统和空间系统，建立了精密单点定位非差组合模型，并利用观测数据进行了精密单点定位解算。计算结果表明，相比单一系统而言，三系统组合有效缩短定位收敛时间以及提高在单系统卫星数较少或者卫星星座分布较差时的定位精度，无论是从连续性、可用性、可靠性、精度以及效率等各方面都更具优势。

Approach to Combined BDS/GPS/GLONASS Precise Point Positioning

A precise single point positioning method based on the fusion of BDS/GPS/GLONASS is presented, unifies the time system and space system of three systems combined precise positioning, establishes the non difference combination model of precise single point positioning, and uses the observation data to solve the precise single point positioning. The calculation results show that compared with a single system, the combination of three systems can effectively shorten the positioning convergence time and improve the positioning accuracy when the number of satellites in a single system is small or the distribution of satellite constellations is poor. It has more advantages in terms of continuity, availability, reliability, accuracy and efficiency.