Table 1 List of abbreviations... | Emerald Publishing

Table 1

List of abbreviations

Abbreviation	Full name	Abbreviation	Full name
BSI	British Standards Institution	ORE	Office for Research and Experiments
BRR	Budapest Rack Rail	PSD	Power Spectral Density
BVLOS	Beyond visual line of sight	R2	Track Roughness Index
CNN	Convolutional neural network	RIM	Railway Inspection and Monitoring
CTRL	Channel tunnel rail link	SD	Standard Deviation
EASA	European Union Aviation Safety Agency	SNCF	Société Nationale des Chemins de fer Français
EC	Electrical conductivity	TGI	Track Geometry Index
EN	European Standard	TMD	Traction Maintenance Depot
FAA	Federal Aviation Administration	TQI	Track Quality Index
GEI	Generalized energy index	TRV	Track Recording Vehicle
GPS	Global positioning system	TSI	Track Structure Index
IEP	Intercity Express Programme	UAV	Unmanned Aerial Vehicle
IMI	Integral maintenance index	UGMS	Unattended Geometry Measurement System
ISO	International Organization for Standardization	UIC	International Union of Railways
KF	Kalman filter	UT	Ultrasonic Testing
LiDAR	Light detection and ranging	XGBoost	eXtreme Gradient Boosting
LSTM	Long short-term memory

Abbreviation	Full name	Abbreviation	Full name
BSI	British Standards Institution	ORE	Office for Research and Experiments
BRR	Budapest Rack Rail	PSD	Power Spectral Density
BVLOS	Beyond visual line of sight	R2	Track Roughness Index
CNN	Convolutional neural network	RIM	Railway Inspection and Monitoring
CTRL	Channel tunnel rail link	SD	Standard Deviation
EASA	European Union Aviation Safety Agency	SNCF	Société Nationale des Chemins de fer Français
EC	Electrical conductivity	TGI	Track Geometry Index
EN	European Standard	TMD	Traction Maintenance Depot
FAA	Federal Aviation Administration	TQI	Track Quality Index
GEI	Generalized energy index	TRV	Track Recording Vehicle
GPS	Global positioning system	TSI	Track Structure Index
IEP	Intercity Express Programme	UAV	Unmanned Aerial Vehicle
IMI	Integral maintenance index	UGMS	Unattended Geometry Measurement System
ISO	International Organization for Standardization	UIC	International Union of Railways
KF	Kalman filter	UT	Ultrasonic Testing
LiDAR	Light detection and ranging	XGBoost	eXtreme Gradient Boosting
LSTM	Long short-term memory

Source(s): Authors’ own work