城市环境中 5G 辅助 BDS RTK 定位的增益因素分析

IF 9 1区 地球科学 Q1 ENGINEERING, AEROSPACE
Weixiang Chen, Tengfei Wang, Zheng Yao, Mingquan Lu, Yi Wang, Cheng Li
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引用次数: 0

摘要

第五代通信技术(5G)和全球导航卫星系统(GNSS)的联合使用是解决城市环境中可视卫星不足和观测质量较低等相关挑战的一种有前途的解决方案。5G 允许进行角度和距离测量,增强了实时运动学(RTK)定位的性能。为了量化 5G 观测对 RTK 定位的改进,本文提出了浮动解增益因子和精度模糊稀释(ADOP)增益因子。基于这些增益因子,本文进行了理论分析和仿真。本研究为 5G 辅助北斗卫星导航系统(BDS)RTK 定位设计了扩展卡尔曼滤波器,同时采用了全模糊分辨率(FAR)和部分模糊分辨率(PAR)模式。我们的实验验证了 5G 辅助北斗卫星导航系统 RTK 定位在减少离群点出现、提高模糊度修正率和定位精度方面的有效性。在 FAR 和 PAR 模式下,三维(3D)空间精度分别提高了 48% 和 18.8%,结果与基于增益因子的理论分析一致。RTK 的固定率从 11.11% 提高到 13.93%,而 PAR 模式的固定率则从 32.58% 提高到 44.43%。在 5G 观测的帮助下,FAR 模式的中位误差从超过 1.3 米减小到 0.9 米,第三四分位误差从 2.1 米减小到 1.05 米;PAR 模式的中位误差从 0.5 米减小到 0.12 米,第三和第四四分位误差从 0.65 米减小到 0.38 米。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis of the gain factors of 5G-assisted BDS RTK positioning in urban environments
The joint utilization of the Fifth Generation Communications Technology (5G) and the Global Navigation Satellite System (GNSS) serves as a promising solution to address the challenges associated with insufficient visible satellites and lower observation quality in urban environments. 5G allows for the angle and distance measurements, augmenting the performance of Real-Time Kinematic (RTK) positioning. To quantify the improvement of 5G observations on RTK positioning, this paper proposes a float solution gain factor and the Ambiguity Dilution of Precision (ADOP) gain factor. Based on these gain factors, the theoretical analysis and simulation are performed. This study designs an extended Kalman filter for 5G-assisted BeiDou Navigation Satellite System (BDS) RTK positioning, employing both the Full Ambiguity Resolution (FAR) and Partial Ambiguity Resolution (PAR) modes. Our experiment verified the effectiveness of 5G-assisted BDS RTK positioning in mitigating outlier occurrences and improving the ambiguity fixing rate as well as the positioning accuracy. In the FAR and PAR modes, the Three-Dimensional (3D) spatial accuracy increased by 48% and 18.8%, respectively, and the results are consistent with theoretical analysis based on gain factors. The fixing rate of RTK increased from 11.11% to 13.93%, while it increased from 32.58% to 44.43% for the PAR mode. The assistance of 5G observations reduced the median error for the FAR mode from over 1.3m to 0.9 m, and the third quartile from 2.1m to 1.05 m. For the PAR mode, the median error decreased from 0.5m to 0.12 m, and the third and fourth quartiles decreased from 0.65m to 0.38 m.
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来源期刊
CiteScore
19.40
自引率
6.20%
发文量
25
审稿时长
12 weeks
期刊介绍: Satellite Navigation is dedicated to presenting innovative ideas, new findings, and advancements in the theoretical techniques and applications of satellite navigation. The journal actively invites original articles, reviews, and commentaries to contribute to the exploration and dissemination of knowledge in this field.
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