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- W2898060969 abstract "Based on1 the finite difference time domain method, the soil media with different dielectric constants and the underground target cylinders with different radii are simulated to obtain the forwardhyperbolicsignal image. The adaptive Gaussian threshold algorithm is used to extract the appearance feature.The hyperbolic signal is fitted by the least square method in order toachieve the inverse information including the location and radius of the underground target. Three different wave velocity calculation methods are introduced and studied in this paper. The results show that the method of calculating wave velocity based on hyperbolic fitting coefficients is poor in stability, and the calculated results deviate from the theoretical value under the different permittivity of soil medium and underground targets with different radii. Meanwhile the calculated values obtained by weighted wave velocities at each point of the hyperbola are close to the theoretical ones." @default.
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- W2898060969 date "2018-10-22" @default.
- W2898060969 modified "2023-10-12" @default.
- W2898060969 title "Underground Electromagnetic Wave Velocity Calculation Method" @default.
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- W2898060969 doi "https://doi.org/10.1145/3207677.3278086" @default.
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