Performance analysis of frequency‑mixed PPP‑RTK using low‑cost GNSS chipset with different antenna configurations

作     者：Xingxing Li Hailong Gou Xin Li Zhiheng Shen Hongbo Lyu Yuxuan Zhou Hao Wang Qian Zhang 

作者机构：School of Geodesy and GeomaticsWuhan University129 Luoyu RoadWuhan 430079HubeiChina Hubei Luojia LaboratoryWuhan University129 Luoyu RoadWuhan 430079HubeiChina Tianjin Navigation Instrument Research Institute268 Dingzigu 1St RoadTianjin 300130China Meituan6 Wangjing East RoadChaoyang DistrictBeijingChina 

出 版 物：《Satellite Navigation》 (卫星导航（英文）)

年 卷 期：2023年第4卷第3期

页      面：54-71页

核心收录：

学科分类：08[工学] 080401[工学-精密仪器及机械] 081105[工学-导航、制导与控制] 0804[工学-仪器科学与技术] 0825[工学-航空宇航科学与技术] 0811[工学-控制科学与工程] 

基　　金：National Natural Science Foundation of China,41974027,Xingxing Li 42204017,Xin Li National Postdoctoral Program for Innovative Talents,China,BX20220239,Xin Li the special fund of Hubei Luojia Laboratory,220100006,Xin Li the Fundamental Research Funds for the Central Universities,2042022kf1001,Xin Li 

主　　题：PPP-RTK Low-cost device Rapid ambiguity resolution Centimeter-level positioning accuracy Performance assessment 

摘      要：Low-cost Global Navigation Satellite System(GNSS)devices offer a cost-effective alternative to traditional GNSS systems,making GNSS technology accessible to a wider range of ***,low-cost GNSS devices often face the challenges in effectively capturing and tracking satellite signals,which leads to losing the observations at certain ***,the observation peculiarities of low-cost devices are in contradistinction to those of traditional geodetic GNSS *** this contribution,a low-cost PPP-RTK model that considers the unique characteristics of different types of measurements is developed and its performance is fully evaluated with u-blox F9P receivers equipped with three distinctive antenna configurations:vertical dipole,microstrip patch,and helix *** static and kinematic experiments in different scenarios are conducted to verify the effectiveness of the proposed *** results indicate that the mixed-frequency PPP-RTK model outperforms the traditional dual-frequency one with higher positioning accuracy and fixing *** the three low-cost antennas tested,the vertical dipole antenna demonstrates the best performance under static conditions and shows a comparable performance as geodetic antennas with a positioning accuracy of 0.02 m,0.01 m and 0.07 m in the east,north,and up components,*** low-speed kinematic scenarios,the helix antenna outperforms the other two with a positioning accuracy of(0.07 m,0.07 m,0.34 m).Furthermore,the helix antenna is also proved to be the best choice for vehicle navigation with an ambiguity fixing rate of over 95%and a positioning accuracy of(0.13 m,0.14 m,0.36 m).