探地雷达技术的回顾与展望

百余年来，探地雷达在技术上逐步成熟，在地下探测领域发挥着越来越重要的作用。主要介绍国外在探地雷达的设备研制、数据处理和具体应用等方面的发展历程及研究动向，也简要介绍了探地雷达在我国的发展情况。     

Measurement of a thin layers thickness using independent component analysis of ground penetrating radar data

To detect overlapped echoes due to the thin pavement layers,we present a thickness measurement approach for the very thin layer of pavement structures.The term ＂thin＂ is relative to the incident wavelength or pulse.By means of independent component analysis of noisy signals received by a single radar sensor,the overlapped echoes can be successfully separated.Once the echoes from the top and bottom side of a thin layer have been separated,the time delay and the layer thickness determination follow immediately.Results of the simulation and real data verify the feasibility of the presented method.