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- W2012330007 abstract "Typical ground-pentrating radar (GPR) transmitters and receivers consist of dipole-type antennas. These antennas have pronounced directive properties and exhibit strong coupling to interfaces across which there are changes in electric material properties. Whereas coupling of antennas to smooth interfaces has been the subject of intense research for several decades, the behaviour of antennas in the vicinity of realistic small-scale heterogeneities is largely unexplored. To address this issue, we simulate the responses of a typical surface GPR antenna to a suite of scale-invariant earth models of increasing complexity. Finite-difference time-domain (FDTD) simulations demonstrate that roughness of the air-soil interface has a pronounced effect on radiation patterns. By comparison, small-scale fluctuations of permittivity only cause relatively minor local distortions of the radiation patterns." @default.
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- W2012330007 date "2002-04-15" @default.
- W2012330007 modified "2023-10-03" @default.
- W2012330007 title "<title>Effects of random heterogeneities and topographic fluctuations on ground-penetrating radar antenna radiation</title>" @default.
- W2012330007 doi "https://doi.org/10.1117/12.462276" @default.
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