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- W2088759863 abstract "Ground-Penetrating Radar has become a popular non-destructive and non-invasive tool in different kind of applications:civil engineering, archaeology, concrete and masonry analysis, etc. The selection of the antenna frequencies depends onthe application, but each antenna has a radiation pattern and some characteristics that have influence in the finalinterpretation and in the model obtained for the studied medium. The knowledge of these features and its couplingeffects with the medium could improve the results of the GPR prospecting studies. In this work, some experimentalprocedures were carried out in order to obtain the 1.6 GHz centre frequency antenna characteristics in the air and in onematerial medium and to compare them. First, the study of the attenuation due to geometrical spreading was performed.This result was compared with the amplitude attenuation in a material medium, deduced from the GPR experimentaldata. Second, the shape of the radiation pattern was estimated in laboratory for different distances between the target andthe antenna. Near field and far field were considered during the experimental data acquisition. Third, the relativeamplitude of the reflected wave (in dB) was obtained depending on the relative position of the antenna over the target.The shape of the radiation pattern and the relative amplitudes obtained in the air were compared with those obtained in aslow medium (water). This slow medium was characterized with the wave velocity and the attenuation factor of the GPRsignal." @default.
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- W2088759863 date "2007-10-05" @default.
- W2088759863 modified "2023-09-23" @default.
- W2088759863 title "Characteristics of the GPR field pattern antennas" @default.
- W2088759863 doi "https://doi.org/10.1117/12.737753" @default.
- W2088759863 hasPublicationYear "2007" @default.
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