摘要
利用空间几何原理推导三频消电离层参数和最小噪声直线空间表达式,采用5个静态观测站和1组实测跑车北斗三频观测数据,对比分析北斗三频消电离层模型与双频消电离层模型PPP精度和收敛速度。结果表明,静态条件下,三频PPP的位置误差为3.75 cm,标准差为2.06 cm,收敛时间为109.6 min,较双频PPP性能分别提升22.3%、19.8%、22.1%;动态条件下,三频PPP的位置误差为15.21 cm,标准差为12.89 cm,较双频PPP性能分别提升42.4%和26.8%,且收敛速度也更优。
We derive the triple-frequency ionospheric-free parameters and minimum noise line expression using the space geometric principle.We compare the positioning accuracy and convergence speed of triple-frequency and dual-frequency ionospheric-free models using data from five static observation stations and Beidou triple-frequency observation data of measured sports car.The results show that under static conditions,the position error of triple-frequency PPP is 3.75 cm,the standard deviation is 2.06 cm,and convergence time is 109.6 min,which is 22.3%,19.8%and 22.1%higher than the performance of dual-frequency PPP,respectively.Under dynamic conditions,the position error of triple-frequency PPP is 15.21 cm and the standard deviation is 12.89 cm,which is 42.4%and 26.8%higher than the dual-frequency PPP,and the convergence speed is better than that.
作者
何劢航
孙付平
肖凯
张伦东
朱新慧
HE Maihang;SUN Fuping;XIAO Kai;ZHANG Lundong;ZHU Xinhui(School of Surveying and Mapping,Information Engineering University,62 Kexue Road,Zhengzhou 450001,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2020年第12期1290-1293,1320,共5页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(41374027,41804018,41674027)。
关键词
北斗卫星导航系统
三频消电离层模型
最小噪声直线
静/动态PPP
定位性能
Beidou satellite navigation system
triple-frequency ionospheric-free model
minimum noise line
static and dynamic PPP
positioning performance
