摘要
为研究北斗三号系统新频点B1C、B2a的双频动态差分定位性能,该文提出一种基于B1C、B2a原始观测值的站间单差模糊度参数的求解方法和实时动态定位获得卡尔曼滤波参数的方法,从而实现北斗三号系统联合全球定位系统(GPS)、伽利略卫星导航系统(Galileo)的动态差分定位。对在北京房山地区采集的北斗卫星导航系统(BDS)、GPS、Galileo双频短基线数据进行解算,并对比分析了其他不同定位模式的结果。实验表明,利用BDS-3的B1C、B2a频点定位精度达到厘米级,符合动态差分定位的精度要求,组合系统模式的BDS-3+GPS双频、BDS-3+Galileo双频的定位精度与稳定性均优于单系统模式的BDS-3双频,表明系统增加能够提高定位精度与稳定性。
In order to study the dual-frequency RTK positioning performance of the new frequency points B1 C and B2 a of the Beidou-3 system,this paper proposes a method for solving the single-difference ambiguity parameters between stations based on the original observations of B1 C and B2 a and real-time dynamic positioning to obtain Kalman filtering.Parameter method to realize the dynamic differential positioning of Beidou-3 system combined with global positioning system(GPS)and Galileo satellite navigation system(Galileo).The Beidou navigation satellite system(BDS),GPS,and Galileo dual-frequency short baseline data collected in the Fangshan area of Beijing were calculated,and the results of other different positioning modes were compared and analyzed.Experiments show that the positioning accuracy of B1 C and B2 a frequency points using BDS-3 reaches the centimeter level,which meets the accuracy requirements of dynamic differential positioning,and the positioning accuracy and stability of BDS-3+GPS dual-frequency and BDS-3+Galileo dual-frequency in the combined system mode.The performance is better than the BDS-3 dual frequency in single system mode,indicating that the increase in the number of systems can improve positioning accuracy and stability.
作者
王楚扬
秘金钟
李勇熹
徐彦田
杨航
窦世标
WANG Chuyang;BEI Jinzhong;LI Yongxi;XU Yantian;YANG Hang;DOU Shibiao(School of Geomatics,Liaoning Technical University,Fuxin,Liaonning 123000,China;Chinese Academy of Surveying and Mapping,Beijing 100036,China;Beijing Fangshan Satellite Laser Ranging National Observation and Research Station,Beijing 102488,China;Lanzhou Jiaotong University,Lanzhou 730070,China;The Third Geodetic Surveying Brigade of Ministry of Natural Resources,Chengdu 610100,China)
出处
《测绘科学》
CSCD
北大核心
2022年第2期16-22,共7页
Science of Surveying and Mapping
基金
中国测绘科学研究院基本科研业务费项目(AR2114)
自然资源部海洋环境探测技术与应用重点实验室开放基金课题项目(MESTA-2020-A001)。
