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Table 2 Comparison of the track irregularity measurement accuracy analysis results from the semianalytical and simulation methods

From: Semi-analytical assessment of the relative accuracy of the GNSS/INS in railway track irregularity measurements

  

Semianalytical

Simulation

Consistency

STI Meas. Error

(mm, 3\(\sigma\))

lateral

1.02

0.99

97%

vertical

1.29

1.09

85%

LTI Meas. Error

(mm, 3\(\sigma\))

lateral

2.24

2.09

93%

vertical

3.01

2.62

87%

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