caa a22 4500 606162461 CHVBK 20210128100639.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10291-014-0419-z doi (NATIONALLICENCE)springer-10.1007/s10291-014-0419-z Modeling regional ionospheric delay with ground-based BeiDou and GPS observations in China [Elektronische Daten] [Rui Zhang, Wei-wei Song, Yi-bin Yao, Chuang Shi, Yi-dong Lou, Wen-ting Yi] The Compass/BeiDou system is currently being built as a navigation constellation consisting of 16 navigation satellites. Construction of these satellites will significantly increase the number of visible satellites over the Chinese mainland and improve the geometry of satellite positioning. We obtained data by simulation and measurements to analyze the influence of BeiDou regarding the longest observation arc and the ionosphere piercing point distribution. A regional ionosphere delay model is built using data measured by BeiDou only, global positioning system (GPS) only, and the dual-satellite system. The results show that the model accuracy for BeiDou only is as accurate as the single GPS system in the middle and lower latitudes, while a deviation becomes noticeable at high latitudes and over marginal areas where observations are fewer due to lack of BeiDou satellites. With the current distribution of the satellites and tracking stations, it appears that the dual-satellite system could significantly improve the ionospheric model in China and the accuracy of differential code bias (DCB) determination. The experimental results also show that the BeiDou satellite DCB is quite stable, with a monthly maximum change of 1.8ns. Springer-Verlag Berlin Heidelberg, 2014 BeiDou satellite navigation system nationallicence GPS nationallicence Regional ionospheric model nationallicence DCB nationallicence Zhang Rui College of Informatics, South China Agricultural University, 510642, Guangzhou, China aut Song Wei-wei Research Center of GNSS, Wuhan University, 430079, Wuhan, China aut Yao Yi-bin School of Geodesy and Geomatics, Wuhan University, 430079, Wuhan, China aut Shi Chuang Research Center of GNSS, Wuhan University, 430079, Wuhan, China aut Lou Yi-dong Research Center of GNSS, Wuhan University, 430079, Wuhan, China aut Yi Wen-ting Research Center of GNSS, Wuhan University, 430079, Wuhan, China aut GPS Solutions Springer Berlin Heidelberg 19/4(2015-10-01), 649-658 1080-5370 19:4<649 2015 19 10291 https://doi.org/10.1007/s10291-014-0419-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10291-014-0419-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Rui College of Informatics, South China Agricultural University, 510642, Guangzhou, China aut NATIONALLICENCE 700 1- Song Wei-wei Research Center of GNSS, Wuhan University, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Yao Yi-bin School of Geodesy and Geomatics, Wuhan University, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Shi Chuang Research Center of GNSS, Wuhan University, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Lou Yi-dong Research Center of GNSS, Wuhan University, 430079, Wuhan, China aut NATIONALLICENCE 700 1- Yi Wen-ting Research Center of GNSS, Wuhan University, 430079, Wuhan, China aut NATIONALLICENCE 773 0- GPS Solutions Springer Berlin Heidelberg 19/4(2015-10-01), 649-658 1080-5370 19:4<649 2015 19 10291