全球定位系统2024，Vol.49Issue(3)：51-56,6.DOI:10.12265/j.gnss.2023157
Galileo三频非组合PPP相位小数偏差估计与模糊度解算
Fractional cycle bias estimation and ambiguity resolution for Galileo triple-frequency uncombined PPP
摘要
Abstract
Galileo already has 28 in-orbit satellites,with precise positioning capabilities on a global scale.All Galileo satellites are capable of broadcasting multi-frequency signals,and multi-frequency integration is expected to further improve the performance of precise point positioning(PPP)ambiguity-fixed solutions.In this paper,the fractional cycle bias(FCB)estimation method and ambiguity resolution(AR)method for Galileo triple-frequency uncombined(UC)PPP are developed,and the derived results are compared with those of dual-frequency UC PPP ambiguity-fixed and ambiguity-float solutions.The results indicate that the standard deviation(STD)of UC FCB series on a single frequency is better than 0.04 cycles using datasets from 155 globally distributed ground tracking stations.The convergence time of Galileo dual-frequency PPP float solutions in the east,north and up directions is 32.0 min,10.0 min and 43.5 min,respectively,and the corresponding statistic of dual-frequency PPP fixed solutions is reduced to 30.5 min,8.5 min and 32.0 min in the three directions,respectively.The convergence time of triple-frequency PPP fixed solutions is further shortened to 16.5 min,8.0 min and 32.0 min in the three directions,respectively.关键词
相位小数偏差(FCB)/模糊度解算(AR)/精密单点定位(PPP)/三频信号/GalileoKey words
fractional cycle bias(FCB)/ambiguity resolution(AR)/precise point positioning(PPP)/triple-frequency signals/Galileo分类
天文与地球科学引用本文复制引用
熊博文,潘林,裴根,刘宁,章湘粤,邓民..Galileo三频非组合PPP相位小数偏差估计与模糊度解算[J].全球定位系统,2024,49(3):51-56,6.基金项目
国家自然科学基金项目(41904030) （41904030）
