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Table 3 Statistics of mean and standard deviation of the TECR values derived from carrier phase observations collected from different GNSS systems at both static station and moving MTR train

From: Feasibility analysis of GNSS-based ionospheric observation on a fast-moving train platform (GIFT)

Items

Accuracy from GPS in TECU/sec

Accuracy from GLONASS in TECU/sec

Accuracy from Galileo in TECU/sec

Accuracy from BDS in TECU/sec

 

Mean

STD

Mean

STD

Mean

STD

Mean

STD

Static station

0.000

0.123

− 0.001

0.123

0.001

0.102

0.000

0.114

MTRS1703

− 0.001

0.145

− 0.005

0.159

− 0.003

0.118

0.003

0.129

MTRS1704

0.002

0.149

0.003

0.140

0.001

0.126

0.004

0.135

MTRS1706

− 0.007

0.146

− 0.000

0.130

− 0.005

0.120

− 0.000

0.123

MTRS1707

− 0.001

0.130

− 0.001

0.128

− 0.006

0.183

0.002

0.124

MTRS1708

0.007

0.194

0.004

0.138

− 0.014

0.168

0.001

0.125

MTRS1709

0.001

0.149

0.002

0.141

0.009

0.127

Overall

0.000

0.152

0.000

0.139

− 0.003

0.140

0.002

0.127