Skip to main content
Fig. 16 | Earth, Planets and Space

Fig. 16

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

Fig. 16

STD of residuals of ionosphere-free measurements on pseudorange and carrier phase GPS PRN 2 (a, d), GPS PRN 12 (b, e), and GPS PRN 18 (c, f) for the baseline HKPC–HKOH along with the elevation and cycle slip information on 24 September 2013. The blue line with circles denotes the STD of residuals for every 5 min; the green line denotes the elevation angle; the red triangles on green lines represent cycle slips of GPS PRN 2, 12, and 18 satellites. The thick straight line with colors represents reference satellites; the red triangles on the thick straight lines represent cycle slips of the reference satellites

Back to article page