GEOPHYSICAL investigation specialist Zetica has developed a high-speed ground penetrating radar system capable of undertaking rail ballast condition surveys at speeds of up to 160 km/h.
Current practice is to survey from a hand-pulled trolley.
The system can acquire data from up to four antennae simultaneously. This means it can profile the trackbed at up to four different depths or across the track in one pass.
Zetica says the new system makes train-mounted 'total route' GPR surveying a reality.
Rapid data interpretation software, which allows problem areas to be identified on site, also means shorter track lengths can be surveyed and sampled in as single possession for the first time.