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Ground penetrating radar (GPR) is an impactful detection method of buried targets developed in these decades and has been broadly used in the world. Compared with other detection method, for example, resistivity, EMI and seismology, the GPR has many advantages. For this reason, the GPR is always one of the researching hotspots in the world in these years and has become an important branch of remote sensing. Although the design of GPRs is very complex and difficult, the demands of applications from different fields are continuously increasing. It is obvious that the research of GPR is very significant for the development of civil economy.