三维步进频率探地雷达在沥青层厚度检测中的应用
许泽善, 周江涛, 刘四新, 曾贤德

The realization of applying 3D frequency stepped ground penetrating to the detection of asphalt layer thickness
Ze-Shan XU, Jiang-Tao ZHOU, Si-Xin LIU, Xian-De ZENG
图2 路面凸起的路标(上图为垂直剖面图,下图为水平切片图)
Fig.2 Road sign with raised road surface(The figure above is a vertical section and the figure below is a horizontal section)