NDLI: Assessment of multi-frequency GNSS PPP models using GPS, Beidou, GLONASS, Galileo and QZSS

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Assessment of multi-frequency GNSS PPP models using GPS, Beidou, GLONASS, Galileo and QZSS

Content Provider	Semantic Scholar
Author	Jin, Shuanggen Jiao, Guoqiang
Copyright Year	2020
Abstract	The development of Global Navigation Satellite System (GNSS) brings the conveniences to benefit positioning, navigation and timing (PNT) services with available three or even more frequency signals. This paper developed the five-system multi-frequency precise point positioning (PPP) models in term of the mathematical and stochastic models. The static positioning performances were evaluated and analyzed with the multi-GNSS experiment (MGEX) network datasets and a vehicle-borne kinematic experiment was conducted to verify the kinematic PPP performances. Besides, the receiver clocks, zenith tropospheric delays (ZTDs), inter-frequency biases (IFBs) and differential code biases (DCBs) estimates were discussed. Results show that the triple-frequency PPP performances perform slightly better than the dual-frequency solutions apart from the GPS involved PPP models based on a single ionosphere-free (IF) combined measurement. By introducing the external ionospheric products, the mean convergence time is reduced. For instance, the mean convergence time of ionosphere-constrained (IC) multi-frequency PPP is reduced by 7.4% from 35.7 to 33.1 min and by 19.0% from 7.8 to 6.3 min, for Galileo-only and five-constellation solutions, respectively, comparing with dual-frequency IF PPP models. Similarly, the kinematic PPP can also achieve improving performances with more frequency signals and multi-GNSS observations.
File Format	PDF HTM / HTML
DOI	10.1088/1361-6501/ab69d5
Alternate Webpage(s)	http://center.shao.ac.cn/geodesy/publications/SuJin_2020MST.pdf
Alternate Webpage(s)	https://doi.org/10.1088/1361-6501%2Fab69d5
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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