基于BD970 OEM板的精密单点定位功能实现

Implementation of PPP based on BD970 OEM board

针对目前精密单点定位技术主要基于PC端事后解算或采用静态模拟动态的技术模式,在实际工程应用中难以满足对实时性和动态性的需求。文中采用Trimble BD970OEM板和Raspberry Pi单板计算机搭建嵌入式接收机平台,将实时精密单点定位程序移植到该平台上,通过无线网络获取信息工程大学iGMAS分析中心提供的实时轨道产品和实时钟差产品,进行实时精密单点定位实验。结果表明,X、Y、Z平均统计精度分别为0.22m、0.32m、0.33m,实现分米级定位,结果与目前已知嵌入式终端产品精度相当,能够满足接收机测量要求。

PPP technology is now applied to position after experiment on the PCs or using the static simulation dynamic model.It is difficult to meet the demand of practical engineering application in the real-time and dynamic aspects.In this paper,Trimble BD970 OEM board and Raspberry Pi single board computer are used to build an embedded receiver platform,and the real-time precision single point positioning program is transplanted to the platform.The real-time orbit and clock products provided by Information engineering University iGMAS analysis center can be obtained through the wireless network.Using these products,a real-time precision single point positioning experiment is conducted.The result shows that the precision of PPP positioning can reach decimeter.Its average statistical precision is 0.22 m,0.32 m,0.33 m.It has similar accuracy with the existing embedded products and can meet the measurement requirements of receiver basically.