基于城市CORS的快速单点定位增强服务与应用
Rapid single point positioning enhancement service and application based on urban CORS
刘洋 1杨光 2程晓晖 3张啸4
作者信息
- 1. 广州市城市规划勘测设计研究院,广东广州 510060;广州市资源规划和海洋科技协同创新中心,广东广州 510060;广东省城市感知与监测预警企业重点实验室,广东广州 510060
- 2. 广州市城市规划勘测设计研究院,广东广州 510060;广东省城市感知与监测预警企业重点实验室,广东广州 510060
- 3. 广州市城市规划勘测设计研究院,广东广州 510060;广州市资源规划和海洋科技协同创新中心,广东广州 510060
- 4. 广州市城市规划勘测设计研究院,广东广州 510060
- 折叠
摘要
智慧城市建设中CORS位置服务的海量、隐私及高可靠性成为重要发展趋势.本文介绍了基于PPP-RTK技术体系的城市CORS增强定位服务,推导了城市CORS增强精密单点定位的公式,给出了城市CORS增强定位参数的可估形式及其在用户端的适用方法.结合广州CORS实时数据,验证了 PPP-RTK服务的有效性.试验表明PPP-RTK用户端平面首历元即可收敛到厘米级,高程7个历元左右可收敛到厘米级,并且PPP-RTK增强定位参数SSR2 OSR与短基线RTK性能大体相当,可支撑海量用户的监测需求.车载试验全程保持优于0.5 m车道级的三维精度,表明PPP-RTK定位能够满足多元化高可靠性定位.
Abstract
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.
关键词
CORS/BDS/精密单点定位/地面增强Key words
CORS/BDS/precise single point positioning/ground enhancement system引用本文复制引用
基金项目
广东省重点领域研发计划(2020B0101130009)
广东省城市感知与监测预警企业重点实验室基金(2020B121202019)
广州市资源规划和海洋科技协同创新中心项目(2023B04J0301)
出版年
2024
NETL
NSTL
万方数据