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- W2323445885 abstract "Commonly conducted GPR surveys on transportation infrastructure have several limitations. The first limitation stems from the use of a single antenna. This limits surveying during a single pass to a single survey line. The second limitation comes from the use of a fixed frequency antenna. Therefore, if of interest is to get a high-resolution image of a medium tested, from the surface to depths of a few meters, it is necessary to use multiple antennas of different frequencies. The third major limitation represents the antenna orientation. A single oriented antenna can detect only objects in the test line direction. A new generation of GPRs, three-dimensional (3-D) GPRs, provide significant improvements in the solution of the above problems. The 3D-GPR system presented operates in the step frequency mode, in a frequency range from 140MHz to 2GHz, and utilizes an array of 31 transmitting and receiving antenna pairs with a spatial resolution of 75 mm. The surveyed medium can be presented in terms of horizontal planes at different elevations, vertical cross sections or three-dimensional images. Applications of the system in roadway and concrete bridge deck surveys are presented." @default.
- W2323445885 created "2016-06-24" @default.
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- W2323445885 date "2008-01-01" @default.
- W2323445885 modified "2023-09-25" @default.
- W2323445885 title "3D-Gpr In Transportation Infrastructure Evaluation" @default.
- W2323445885 doi "https://doi.org/10.3997/2214-4609-pdb.177.172" @default.
- W2323445885 hasPublicationYear "2008" @default.
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