GPS Partial Ambiguity Resolution Method for Zero-difference Precise Point Positioning

Acta Geodaetica et Cartographica Sinica

DONG Bingquan¹  CHAI Hongzhou¹  LIU Ming²  LIU Jun³  PAN Zongpeng³  WANG Huarun³ 

[1] ;Beijing Space Information Relay and Transmission Technology Research Center, Beijing 100094, ChinaAbstract;Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450001, China;

关键词: precise point positioning;    ambiguity resolution;    quality control;    success rate;   

DOI  :  10.11947/j.AGCS.2015.20150056

来源: DOAJ

【 摘 要 】

With the development of ambiguity resolution for precise point positioning(PPP) in recent years, it can improve positioning accuracy of PPP with short time observations since ambiguities can be fixed to right integers. However, unacceptable errors would be introduced into coordinate parameters if ambiguities are fixed to wrong integers. It's necessary to investigate the reliability and success rate of ambiguity-fixed PPP. This paper investigates PPP ambiguity fixing method based on zero-differenced fractional-cycle biases(FCBs). A partial ambiguity resolution(PAR) strategy based on cascaded quality control is proposed. Data sets from Europe CORS are used to validate and demonstrate PAR strategy. Results have showed that PPP ambiguity fixing can improve positioning accuracy of hourly PPP solution. When the strategy of PAR is applied, the influence of un-convergence ambiguities can be controlled efficiently and the success rate of PPP ambiguity fixing is improved.

【 授权许可】

Unknown