北斗三频宽巷组合网络RTK单历元定位方法

doi:10.11947/j.AGCS.2015.20140308

测绘学报 ›› 2015, Vol. 44 ›› Issue (6): 641-648.doi: 10.11947/j.AGCS.2015.20140308

北斗三频宽巷组合网络RTK单历元定位方法

高旺¹, 高成发¹, 潘树国², 汪登辉¹, 王胜利³

1. 东南大学交通学院, 江苏南京 210096;
2. 东南大学仪器科学与工程学院, 江苏南京 210096;
3. 安徽理工大学测绘学院, 安徽淮南 232001

收稿日期:2014-06-12 修回日期:2015-01-06 出版日期:2015-06-20 发布日期:2015-07-28
作者简介:高旺(1989—),男,博士生,研究方向为多频多系统区域增强快速精密定位。E-mail: gaowang1990@gmail.com
基金资助:
“十二五”国家科技支撑计划重点资助项目(2012BAJ23B01)

Single-epoch Positioning Method in Network RTK with BDS Triple-frequency Widelane Combinations

GAO Wang¹, GAO Chengfa¹, PAN Shuguo², WANG Denghui¹, WANG Shengli³

1. School of Transportation, Southeast University, Nanjing 210096, China;
2. School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China;
3. School of Surveying and Mapping Engineering, Anhui University of Science & Technology, Huainan 232001, China

Received:2014-06-12 Revised:2015-01-06 Online:2015-06-20 Published:2015-07-28
Supported by:
Key Projects in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period(No.2012BAJ23B01).

摘要/Abstract

摘要： 利用三频超宽巷/宽巷模糊度波长较长从而易于固定的优势,提出了一种基于北斗三频宽巷组合的网络RTK单历元定位方法。数据处理中心利用基准站实时生成并播发包含双差对流层和电离层延迟改正信息的虚拟观测值;用户站利用载波、伪距组合及分步解算的TCAR方法基于单个卫星对、单历元可靠固定两个超宽巷或宽巷模糊度。最后利用已固定模糊度且噪声最小的宽巷观测值和内插得到的大气延迟改正进行实时动态定位解算。试验结果表明,对于本文提出的网络RTK单历元定位方法,用户站宽巷模糊度单历元解算准确率高于99.9%,统计的定位中误差平面为3～4 cm,高程方向约为5 cm。

关键词: 北斗三频, 宽巷组合, 网络RTK, 单历元定位

Abstract: Using the advantage that triple-frequency extra-widelane or widelane ambiguities have much longer wavelength and thus are easy to be fixed, a new network RTK (real-time kinematic) single-epoch positioning method based on BDS widelane combinations is proposed. The data processing center uses reference stations to calculate and broadcast the real-time virtual observations including double difference (DD) tropospheric and ionospheric delay correction. Then using single-satellite-pair and single-epoch mode, two extra-widelane or widelane ambiguities are resolved reliably by carrier-pseudo combination and TCAR (three-carrier ambiguity resolution) method at the rover station. Finally, the ambiguity-fixed widelane observations with the minimum observation noise and the broadcast atmospheric correction are used together to calculate the real-time kinematic positioning results. Experimental results show that the correct rates of single-epoch widelane ambiguity resolution at rover stations are larger than 99.9%. The statistical positioning error in plane is 3-4 cm, and the error in up direction is about 5 cm.

Key words: triple frequency of BDS, widelane combinations, network RTK, single-epoch positioning

中图分类号:

P228

高旺, 高成发, 潘树国, 汪登辉, 王胜利. 北斗三频宽巷组合网络RTK单历元定位方法[J]. 测绘学报, 2015, 44(6): 641-648.

GAO Wang, GAO Chengfa, PAN Shuguo, WANG Denghui, WANG Shengli. Single-epoch Positioning Method in Network RTK with BDS Triple-frequency Widelane Combinations[J]. Acta Geodaetica et Cartographica Sinica, 2015, 44(6): 641-648.

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北斗三频宽巷组合网络RTK单历元定位方法

Single-epoch Positioning Method in Network RTK with BDS Triple-frequency Widelane Combinations

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