基于混沌脉冲位置调制信号的地下管线探测研究

Research on Detection of Underground Pipeline Based on Chaotic Pulse Position Modulation Signal

提出了一种基于混沌脉冲位置调制信号的探地雷达系统,可用于城市地下管线探测。该系统以宽带混沌脉冲位置调制信号作为发射信号,利用混沌相关法获取管线埋设深度信息,通过天线扫描实现对管线的二维定位。仿真实现了对地下0.5 m、1.0 m深处直径为0.2 m、0.6 m金属和非金属管线的定位。进一步对该系统进行了实验验证。结果表明利用该系统可以对地下不同直径和埋设深度的金属管线或非金属管线进行探测。

A ground penetrating radar system based on chaotic pulse position modulation signal is proposed,which can be used for urban underground pipeline detection.In the radar system,a wideband chaotic pulse position modulation signal is used as the transmitting signal,and chaotic correlation method is used to obtain the buried depth information of the pipeline.Further,the two-dimensional location of the pipeline is realized by antenna scanning.In the simulation,the metal or non-metal pipelines with a diameter of 0.2m and 0.6 m,buried in the depth of 0.5 m and 1.0 m,can be located.The experimental results further verify the performance of the system.The results show that the system can detect metal pipelines or non-metal pipelines with different diameters and buried depths.