GPS/VRS虚拟观测值生成与发布研究

Research on the differential correction generation approach for GPS/VRS technique

虚拟参考站(VRS)技术是目前GPS网络RTK系统研究领域的热点之一。介绍VRS系统的组成及原理;论述VRS虚拟观测值的生成算法及发送给用户后随机商业软件的解算模型;最后介绍算法的软件系统实现,通过与真实观测值比较的方法验证虚拟观测值的可行性和稳定性。

The concept of Real-time Kinematic GPS positioning with virtual reference station has been developed greatly during the past few years.In this paper,the primary principle and construction of VRS system is introduced firstly.Then the methodology of Virtual phase observation generation from VRS network solution is discussed.Besides,the solution model of GPS receiver software after the Differential Correction sent to the user is discussed and results show that the model is identical with conventional RTK.Finally, experiments are taken to prove the reliability and feasibility of the Virtual phase observation generation.