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2018 | OriginalPaper | Buchkapitel

Time Transfer Analysis of GPS- and BDS-Precise Point Positioning Based on iGMAS Products

verfasst von : Yulong Ge, Xuhai Yang, Weijin Qin, Hang Su, Meifang Wu, Yuanxi Wang, Shengli Wang

Erschienen in: China Satellite Navigation Conference (CSNC) 2018 Proceedings

Verlag: Springer Singapore

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Abstract

International time transfer experiment based on GPS- and BDS-precise point positioning (PPP) technique is carried out using final (ISC) and rapid (ISR) precise satellite clock products provided by iGMAS (international GNSS continuous Monitoring and Assessment System). As a comparison, the same processing is conducted by using COD products provided by the Center for Orbit Determination in Europe (CODE). Experimental data come from observation of seven stations from Multi-GNSS-Experiment (MGEX) and two stations including PT11 (PTB) and BRUX (ROB) from time keeping laboratory in 70 days from 5 August to 15 October 2017. With PTB as the center node, the solutions of 8 time-links are formed. In order to verify the type A uncertainty (uA) of time transfer based on GPS- and BDS-PPP by using iGMAS products, this paper compares the differences between GPS- and BDS-PPP results and GPS PPP results using IGR products. The experimental results demonstrate that uA of time transfer based on GPS- and BDS-PPP using iGMAS products are roughly equal to CODE products. For the results of time-links based on GPS- and BDS-PPP, the STD of one-day arc solutions can reach better than 0.1 and 0.8 ns for all of processing, while 0.1 and 1 ns were achieved for ten-day arc solutions, respectively. Since uA of GPS- and BDS-PPP time transfer using iGMAS products was up to sub nanosecond, therefore, the experiments can provide a reference for BIPM to use BDS PPP based on iGMAS products for International UTC/TAI comparison. Moreover, this also illustrates iGMAS products is reliable.

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Metadaten
Titel
Time Transfer Analysis of GPS- and BDS-Precise Point Positioning Based on iGMAS Products
verfasst von
Yulong Ge
Xuhai Yang
Weijin Qin
Hang Su
Meifang Wu
Yuanxi Wang
Shengli Wang
Copyright-Jahr
2018
Verlag
Springer Singapore
DOI
https://doi.org/10.1007/978-981-13-0005-9_41

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