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Table 7 Train acceleration validation based on D_LRBG distance, trainborne clock and algorithm (Alternative 3)

From: Radio communication-based method for analysis of train driving in an ERTMS signaling environment

Date/train run

Speed standard dev σv (km/h)

Speed based on D_LRBG, clock, and algorithm

Acceleration standard dev σa (m/s2)

t = 6 s

Acceleration standard dev σa (m/s2)

t = 12 s

Acceleration standard dev σa (m/s2)

t = 18 s

191031/7401

0.70

0.05

0.02

0.02

191031/7406

0.67

0.04

0.02

0.02

191031/7409

0.80

0.05

0.03

0.02

191101/7401

0.65

0.04

0.02

0.01

191101/7406

0.59

0.04

0.02

0.01

191101/7409

0.75

0.05

0.03

0.02

191101/7412

0.85

0.06

0.03

0.02

191112/7401

0.69

0.05

0.02

0.02

191112/7406

0.76

0.05

0.03

0.02

191112/7409

0.71

0.05

0.02

0.02

191112/7412

0.74

0.05

0.02

0.02

191113/7401

0.78

0.05

0.03

0.02

191113/7406

0.99

0.07

0.03

0.02

191113/7409

1.18

0.08

0.04

0.03

191114/7403

1.16

0.08

0.04

0.03

191114/7410

0.86

0.06

0.03

0.02

191114/7413

1.23

0.08

0.04

0.03

Pooled standard deviation, σa

0.83

0.05

0.03

0.02

Acceleration dev, adev

± 0.11

± 0.05

± 0.04