Rapid single point positioning enhancement service and application based on urban CORS
In the realm of smart city development,the scalability,privacy,and heightened reliability of CORS(continuously operating reference station)location services have emerged as pivotal focal points.This paper presents an innovative urban CORS augmented positioning service leveraging PPP-RTK(precise point positioning-real-time kinematic)technology.It delin-eates the formulaic methodology for achieving enhanced precision single-point positioning within urban environments,elucida-ting the estimable parameters essential for urban CORS augmented positioning and their practical implementation on client plat-forms.Through integration with real-time data sourced from the Guangzhou CORS network,the efficacy of the PPP-RTK service is rigorously evaluated.Test results demonstrate that the initial epoch of the PPP-RTK client plane rapidly converges to centimeter-level accuracy,with vertical elevation convergence achieved within approximately seven epochs.Furthermore,the performance of the enhanced positioning parameter SSR2OSR(state space representation to observation space representation)in PPP-RTK is found to be comparable to that of short baseline RTK solutions,thus substantiating its capacity to cater to the monitoring requirements of a substantial user base.On-board experiments exhibit superior 3D accuracy,surpassing lane-level precision by a margin of less than 0.5 meters,underscoring the capability of PPP-RTK positioning to fulfill the stringent relia-bility criteria essential for various positioning applications.
CORSBDSprecise single point positioningground enhancement system
NETL
NSTL
万方数据
