Idealized surfaces, such as water surfaces or very level terrain, having radio horizons that are not formed by prominent ridges or mountains but are determined solely as a function of antenna height above ground and the effective Earth radius . ( 188 )
SMOOTH EARTH
Meaning of SMOOTH EARTH in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012