対流圏見通し外伝播の回折理論

概要

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About troposheric trans-horizon propagation it is considered that the field strength far beyond the horizon does not decrease rapidly with distance as the classical diffraction theory explained. Refraction index in atmosphere near the earth surface is modified by the surface-layered refraction property and the roughness. By means of the earth flattening approximation, the problem of radio diffraction by the earth is treated as in an inhomogeneous atmosphere with the modified index. Recieved fields are obtained for both vertical electric and vertical magnetic dipole excitation. Solutions obtained by the usual method of integration reveal that the propagation of radio waves are attenuated in proportion to the distance along the earth surface at a noticeably rate. A fairly good agreement between the theory and experiments is given.
明治大学の論文