Ground Penetrating Radar for Railway Evaluation

Ground Penetrating Radar to Evaluate Rail Ballast, Sub-ballast and Sub-grade

Railroad maintenance and service providers have traditionally relied on visual inspection and excavation to assess ballast condition and measure sub-ballast and sub-grade. Ground penetrating radar is used to indicate ballast fouling and accurately measure the structural layers to a higher precision and in far less time than with traditional methods.

Ballast Condition Assessment

With the introduction of high frequency, air-launched antennas, rail maintenance engineers now have a qualitative tool to measure ballast fouling over large sections of track in minimal time. Allocate rehabilitation efforts and funding only to the sections that require priority attention while minimizing track downtime.

Processed data (top) showing clean ballast
thickness and locations of high moisture contrast.
Ballast condition data (bottom) mapped in Google Earth™.