摘要
普通精密单点定位主要是针对多历元观测数据,本研究重点关注单历元精密单点定位及其精度分析。在分析GPS单历元观测量误差源基础上,讨论了单历元非差精密单点定位误差;给出了单历元非差精密单点定位的解算流程,对Bjfs、Mizu、Wuhn和Lhaz等4个IGS站1天的实际观测数据分别进行了处理,单历元精密单点定位精度达到了4.5cm,与GPS RTK结果精度一致。单历元精密单点定位只需一个测站的单一历元观测就可以进行精确定位,而GPS RTK至少需要两台仪器。
The common precise point positioning （PPP） is mainly aimed at multi-epoch observed data and this paper focuses on the single-epoch PPP and its accuracy. Based on the analysis of single-epoch observed error sources, the positioning errors with the single-epoch PPP were analyzed and then the flowchart to precisely estimate positions with the single epoch PPP technique was put forward. In addition,one day＇s practical GPS data of 4 IGS stations （Bjfs, Mizu, Wuhn and Lhaz） were processed with the single-epoch PPP method to estimate precise positions with an accuracy of better than 4.5 cm,in accord with that of the GPS RTK technique. It is concluded that location is pre- cisely estimated with the single-epoch data from one station by using the single-epoch PPP,but with at least two in- struments by using the GPS RTK.
出处
《山东科技大学学报（自然科学版）》
CAS
2013年第1期74-78,共5页
Journal of Shandong University of Science and Technology(Natural Science)
