大地测量与地球动力学2026，Vol.46Issue(5)：599-609,11.DOI:10.14075/j.jgg.2025.06.219
基于OSB估计的多频多系统PPP-AR性能分析
Performance of Multi-Frequency Multi-System Precise Point Positioning with Ambiguity Resolution Based on OSB Estimation
摘要
Abstract
Accurate estimation of phase biases is an essential prerequisite for achieving PPP ambiguity resolution(AR).We focus on the estimation methods of observable-specific signal bias(OSB)and multi-frequency multi-GNSS PPP-AR technique,and conduct experimental analysis on the combined observations from GPS,Galileo and BDS at 30 MGEX stations during March 2024.The results show that the phase and pseudorange OSB have good stability,the STD of phase OSB in different systems is less than 0.05 ns,and the consistency of different types of inter-frequency phase and pseudorange OSB of each system is good.The wide-lane/narrow-lane ambiguity resolution rates reach 98.5％/96.7％for GPS,99.3％/98.8％for Galileo,and 95.4％/94.9％for BDS.Compared with float solu-tions,the convergence times of triple-frequency PPP fixed solutions are reduced by 28.37％in kine-matic scenario,shortened by 31.61％in static scenario.Under static condition,average single-day so-lution positioning accuracy in E,N and U directions improved by 24.91％(0.71 cm),31.22％(0.50 cm),and 18.77％(1.10 cm),respectively,demonstrating significant enhancement in positioning per-formance.关键词
精密单点定位/多频多系统/模糊度固定/观测值特定信号偏差/相位小数偏差Key words
precise point positioning(PPP)/multi-frequency multi-system/ambiguity resolution/ob-servable-spcific signal bias(OSB)/fractional cycle bias(FCB)分类
天文与地球科学引用本文复制引用
杨嘉兴,刘学习,王中元,郑南山,朱麟丰,李莎..基于OSB估计的多频多系统PPP-AR性能分析[J].大地测量与地球动力学,2026,46(5):599-609,11.基金项目
国家自然科学基金(42304015,42274048) （42304015,42274048）
江苏省自然科学基金(BK20231087) （BK20231087）
中国博士后科学基金(2025T180062,2024M753525) （2025T180062,2024M753525）
湖北珞珈实验室开放基金(250100007) （250100007）
江苏省青年科技人才托举工程项目(JSTJ-2024-075) （JSTJ-2024-075）
中国科学院精密测量科学与技术创新研究院精密大地测量与定位全国重点实验室开放基金(SKLGED2024-3-7) （SKLGED2024-3-7）
江苏省自然资源科技项目(JSZRKJ202510). （JSZRKJ202510）
