PPP-RTK修正产品矢量化完好性监测方法

doi:10.11947/j.AGCS.2024.20230475

测绘学报 ›› 2024, Vol. 53 ›› Issue (9): 1777-1789.doi: 10.11947/j.AGCS.2024.20230475

• 大地测量与导航 • 上一篇

PPP-RTK修正产品矢量化完好性监测方法

李亮¹(), 王柳淇¹(), 王宁波², 李敏¹, 李子申²^,³, 杜丰泽¹, 庞帅¹, 那志博¹

^1.哈尔滨工程大学智能科学与工程学院，黑龙江　哈尔滨　150001
^2.中国科学院空天信息创新研究院，北京　100094
^3.齐鲁空天信息创新研究院，山东　济南　250132

收稿日期:2023-10-16 发布日期:2024-10-16
通讯作者: 王柳淇 E-mail:liliang@hrbeu.edu.cn;wangliuqi@hrbeu.edu.cn
作者简介:李亮（1984—），男，博士，教授，博士生导师，研究方向为基于GNSS的高精度导航与完好性监测。E-mail：liliang@hrbeu.edu.cn
基金资助:
国家重点研发计划(2021YFB3901300);国家自然科学基金(62373117)

Vectorized integrity monitoring method for PPP-RTK correction products

Liang LI¹(), Liuqi WANG¹(), Ningbo WANG², Min LI¹, Zishen LI²^,³, Fengze DU¹, Shuai PANG¹, Zhibo NA¹

^1.College of Intelligent System Science and Engineering, Harbin Engineering University, Harbin 150001, China
^2.Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
^3.Qilu Aerospace Information Research Institute, Jinan 250132, China

Received:2023-10-16 Published:2024-10-16
Contact: Liuqi WANG E-mail:liliang@hrbeu.edu.cn;wangliuqi@hrbeu.edu.cn
About author:LI Liang (1984—), male, PhD, professor, PhD supervisor, majors in GNSS-based precise navigation and integrity monitoring. E-mail: liliang@hrbeu.edu.cn
Supported by:
The National Key Research and Development Program of China(2021YFB3901300);The National Natural Science Foundation of China(62373117)

摘要/Abstract

摘要：

PPP-RTK修正产品是实现卫星导航高精度、快收敛精密定位的基础信息，完好性监测是保障PPP-RTK导航定位可靠性的核心关键。传统PPP-RTK修正产品完好性监测方法存在风险概率分配体系不完善及多重风险源监测灵敏度不足的问题，导致PPP-RTK修正产品的可用性较低。针对此，本文提出了PPP-RTK修正产品矢量化完好性监测方法，基于最优保护水平准则分配PPP-RTK修正产品完好性与连续性指标，设计PPP-RTK修正产品“播发前-播发后”测距域与定位域协同的序贯监测架构，形成面向载波相位层级的矢量分类监测与多站综合监测，实现PPP-RTK修正产品高灵敏、高可用的矢量化完好性监测。仿真与实测数据的分析结果表明，PPP-RTK修正产品矢量化完好性监测方法监测灵敏度与可用性均优于传统方法，可用性可达到99%以上。

关键词: PPP-RTK, 修正产品, 完好性监测, 矢量化, 可用性

Abstract:

PPP-RTK correction products serve as fundamental information for achieving the satellite navigation-based positioning with high-precision and rapidly convergence simultaneously. Integrity monitoring is a core requirement for ensuring the reliability of PPP-RTK positioning. The traditional integrity monitoring methods for PPP-RTK correction products suffer from the lack of the monitoring risks allocation tree and the low sensitivity in monitoring multiple faults. These shortcomings cause a decreased availability of the PPP-RTK correction products. In this contribution, a vectorized integrity monitoring method is proposed for PPP-RTK correction products. Based on the minimum protection level criteria, the integrity and continuity risk of PPP-RTK correction products has been allocated. A sequential pre- and post-broadcasting loopback monitoring architecture has been developed in the range domain and the position domain, respectively. The proposed method, implemented with carrier phase observations, incorporates vectorized classification and monitoring, along with the executive monitoring the results of multiple stations. The proposed vectorized integrity monitoring method enhances the sensitivity and availability of the integrity monitoring for PPP-RTK correction products. Analysis of simulation and real-world data indicates that the proposed method outperforms traditional methods in both sensitivity and availability, achieving at least 99% of availability.

Key words: PPP-RTK, correction products, integrity monitoring, vectorization, availability

中图分类号:

P228

李亮, 王柳淇, 王宁波, 李敏, 李子申, 杜丰泽, 庞帅, 那志博. PPP-RTK修正产品矢量化完好性监测方法[J]. 测绘学报, 2024, 53(9): 1777-1789.

Liang LI, Liuqi WANG, Ningbo WANG, Min LI, Zishen LI, Fengze DU, Shuai PANG, Zhibo NA. Vectorized integrity monitoring method for PPP-RTK correction products[J]. Acta Geodaetica et Cartographica Sinica, 2024, 53(9): 1777-1789.

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修正产品类型\完好性指标	完好性风险	连续性风险
卫星钟轨修正产品	8.74×10^－9	8.36×10^－7
区域对流层修正产品	6.81×10^－9	6.23×10^－7
区域电离层修正产品	3.45×10^－8	3.54×10^－6

监测站名称	不可用	误警	连续性/(%)	可用性/(%)
TUO2	103 686	3	99.99	99.48
CUTA	52 901	0	100	99.75
INVR	141 943	0	100	99.34
IGEO	43 243	0	100	99.78
KARL	103 709	0	100	99.35
HKFN	52 594	10	99.99	99.75

异常幅值	超限	正确告警	误警	可用性/(%)
0倍标准差	0	0	328	99.99
1倍标准差	5	5	2210	99.91
2倍标准差	212	212	38 485	98.44
3倍标准差	4509	4509	338 821	86.34

修正产品类型	平均MDB/m		可用性/(%)
修正产品类型	传统方法	本文方法	传统方法	本文方法
卫星钟轨修正产品	0.432	0.146	95.85	99.42
区域对流层修正产品	0.850	0.357	95.10	99.47
区域电离层修正产品	1.237	0.374	94.32	99.46

PPP-RTK修正产品矢量化完好性监测方法

Vectorized integrity monitoring method for PPP-RTK correction products

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