七十年代后期,关于用雷达来判释铁路线路问题,外国曾进行过大量探讨。用雷达来判释线路,就是用电磁脉冲方法绘制线路构件位置和状况图。这种雷达称为地层界面雷达(Subsurface Interface Radar,以下简称SIR)。在欧洲铁路对SIR的应用,已得到了 The late seventies, on the use of radar to determine the issue of rail lines, foreign countries have conducted extensive discussions. To use radar to interpret the line, is to use the electromagnetic pulse method to draw the location of line components and conditions. This type of radar is called Subsurface Interface Radar (SIR). The use of SIR in the European railway has been achieved