Detecting and Tracing of Railroad Trackbed Interfaces

Abstract:

Based on the wavelet transform method,the primitive Ground Penetrating Radar(GPR) data were transformed into the signal whose principal constituent was only the sudden changes of the interface information.An interfacetest algorithm strategy is designed according to the characteristic of reflection echo from interfaces.By extracting the information of individual points of the interfaces from all traced data,an interface classification principle is proposed to distinguish the rupture,fluctuation,branching and intersection of the interface,so that the interfaces are intelligently traced.The actual testing shows that the method can be used to plot the graph of railroad trackbed interfaces swiftly,reflect the actual conditions of railroad substructures,and process a mass of data.The engineering technicians are released from the burden of the image interpretation.