Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011acasn..52..310x&link_type=abstract
Acta Astronomica Sinica, vol. 52, no. 4, p. 310-321
Astronomy and Astrophysics
Astronomy
Astrometry, Earth: Atmosphere, Methods: Analytical
Scientific paper
According to the requirement of high-precision satellite navigation, the method and result of quasi-real-time monitoring the variation of the regional ionospheric TEC (total electron content) and GPS satellite differential code bias (DCB) are introduced. The pseudo-range data smoothed by dual-frequency carrier phase are used from the GPS networks in China. Especially, the feasibility of retrieving DCB independently from the regional GPS networks with different sizes is studied. Three networks based on the GPS stations in China are constructed. The comparison of the computed DCB and VTEC (vertical total electron content) with those of CODE (Center for Orbit Determination in Europe) shows that it is necessary to consider the size of regional network in order to obtain the reliable result of local quasi-real-time measured DCB; the compared precisions of the regional quasi-real-time measured VTEC and DCB are about 2.0 TECu and 0.25 ns, respectively.
Lu Xiao-Song
Song Shu-Li
Xue Jun-Chen
Zhu Wen-Yao
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