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铁路路基层面的检测与跟踪
引用本文:杨新安,廖立坚,凌保林,叶培旭.铁路路基层面的检测与跟踪[J].同济大学学报(自然科学版),2009,37(5).
作者姓名:杨新安  廖立坚  凌保林  叶培旭
作者单位:同济大学,城市轨道与铁道工程系,上海,200092
摘    要:利用小波变换将原始雷达记录变换为层面突变信息占主要成分的信号,根据电磁波在层面位置反射回波的特征,设计出层面检测算法,提取出所有道数据的层面点信息,针对层面出现的断裂、跳跃、分岔、交叉等现象,提出层面点归类原则,从而智能地实现层面的跟踪.通过实际资料验证表明,该算法能快速地绘制出铁路路基的层面曲线图,并能反映地下结构层的真实情况,适用于海量数据处理,将技术人员从繁重的读图任务中解脱出来.

关 键 词:探地雷达  层面  小波变换  检测  跟踪

Detecting and Tracing of Railroad Trackbed Interfaces
YANG Xin'an,LIAO Lijian,LING Baolin,YE Peixu.Detecting and Tracing of Railroad Trackbed Interfaces[J].Journal of Tongji University(Natural Science),2009,37(5).
Authors:YANG Xin'an  LIAO Lijian  LING Baolin  YE Peixu
Institution:Department of Urban Track and Railway Engineering,Tongji University,Shanghai 200092,China;Department of Urban Track and Railway Engineering,Tongji University,Shanghai 200092,China;Department of Urban Track and Railway Engineering,Tongji University,Shanghai 200092,China;Department of Urban Track and Railway Engineering,Tongji University,Shanghai 200092,China
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.
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