ITU-R P.1060 SPANISH-1994
高频(HF)地面系统中影响频率共享的传播因素

PROPAGATION FACTORS AFFECTING FREQUENCY SHARING IN HF TERRESTRIAL SYSTEMS

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标准号

ITU-R P.1060 SPANISH-1994

发布日期

1994年01月01日

实施日期

废止日期

无

中国标准分类号

M10;M30

发布单位

IX-ITU

适用范围

Limitations on the sharing of radio frequencies in the HF spectrum are dependent on the propagation characteristics of ionospheric radiowaves. Frequency sharing at HF has been found to be extremely difficult because radiowaves propagating via the ionosphere do not attenuate quickly. Any attempt at frequency sharing must consider the facts that at HF, radiowaves normally propagate in all directions; radiowaves are refracted and reflected by the ionosphere and the ground and will continue until dissipated.