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Earth, Planets and Space
Fig. 14 | Earth, Planets and Space

Fig. 14

From: The ionospheric condition and GPS positioning performance during the 2013 tropical cyclone Usagi event in the Hong Kong region

Fig. 14

STD of residuals on ionosphere-free pseudorange (a) and carrier phase (b) measurements for the satellites which suffer cycle slips from aspects of three period (1) 00:00–12:00 UT; (2) 12:00–18:00 UT; (3) 18:00–24:00 UT at the site of HKPC on 24 September 2013. The isolated points without linkage with other points mean that the satellites are just visible in one of the three periods

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