Designing and mapping underground construction works have been doing for years to meet urgent demands in urbanization process. In this field, Ground Penetrating Radar (GPR) method has shown many advantages in determining underground structures. However, our country has almost no processing program that meets demands of processing and interpretation GPR data. This paper introduced GPRTVN processing program which was the research result of the Department of Geophysics for years. This program

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... process data of many present GPR equipments and quickly provide cross sections of existing underground constructions. It would be very useful for construction and building investigation companies in Vietnam.