海洋测绘2026，Vol.46Issue(3)：40-44,5.DOI:10.3969/j.issn.1671-3044.2026.03.009
BDS-3多频相位观测值偏差估计及非差模糊度固定
BDS-3 multi-frequency phase OSB estimation and undifferenced ambiguity resolution
摘要
Abstract
In order to further analyze the performance of BDS-3 multi-frequency precise point positioning(PPP),based on the deduced BDS-3 multi-frequency phase OSB estimation method and undifferenced PPP-AR model,the distribution of PPP ambiguity residuals,positioning accuracy,convergence time,and ambiguity fixing rate were studied.The results show that the phase OSB obtained based on this method are suitable for ambiguity resolution using any frequency combinations.Compared with the B1I/B3I dual-frequency kinematic ambiguity-float solution,the positioning accuracy of the ambiguity-fixed solution in the east,north and up directions are improved by 28.2%,19.3%and 12.9%,respectively.In addition,compared with the traditional frequency B1I/B3I combination,the convergence speed of the PPP ambiguity-fixed solution of the new frequency B1C/B2a combination is significantly improved,and its three-dimensional positioning accuracy in the first epoch is improved by about 25%.With in-depth research on the new frequencies of BDS-3 and the widespread application of OSB products,more frequency options will be provided for high-precision positioning users when implementing PPP-AR.关键词
北斗三号卫星导航系统/精密单点定位/相位观测值信号偏差/非差模糊度固定/收敛时间Key words
BeiDou-3 navigation satellite system/precise point positioning/phase observable-specific signal biases/undifferenced ambiguity resolution/convergence time分类
天文与地球科学引用本文复制引用
于学圣,廖晓琴,龚成锴,梁成..BDS-3多频相位观测值偏差估计及非差模糊度固定[J].海洋测绘,2026,46(3):40-44,5.基金项目
江苏省自然资源科技项目(JSZRKJ202503). （JSZRKJ202503）
