Transmission loss of space waves propagated over irregular terrain

作     者：Norton, Kenneth A. 

作者机构：National Bureau of Standards Boulder Colo. United States 

出 版 物：《Transactions of the IRE Professional Group on Antennas and Propagation》 (Trans. IRE Prof. Group Antennas Propagat.)

年 卷 期：1952年第3卷第1期

页      面：152-166页

主　　题：Propagation losses Receiving antennas Transmission line antennas Surface waves Transmitting antennas Radio transmitters Power transmission lines Distributed parameter circuits Coupling circuits Polarization 

摘      要：It is explained why two particular equations be used for a study of space-wave propagation over irregular terrain. It is believed that these two equations provide a method of separating the systematic from the random effects of terrain irregularities. Our development of a transmission loss formula is based upon the determination of a smooth curved surface (either concave or convex) which approximates that part of the actual terrain which is effective in the ground-reflection process and the subsequent use of well-known methods of attenuation calculation applicable to such smooth, curved surfaces.