ITU-R P.1546-5-2013
30 MHz-3 000 MHz频率范围内地面业务的点对区域预测的方法

Method for point-to-area predictions for terrestrial services in the frequency range 30 MHz to 3 000 MHz

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标准号

ITU-R P.1546-5-2013

发布日期

2013年09月01日

实施日期

废止日期

无

中国标准分类号

M30

发布单位

IX-ITU

引用标准

ITU-R P.528 ITU-R P.452 ITU-R P.617 ITU-R P.1411 ITU-R P.530 ITU-R P.2001 ITU-R P.844 ITU-R P.453 ITU-R P.534 ITU-R P.1406

被代替标准

ITU-R P.1546-5-2009

适用范围

This Recommendation describes a method for point-to-area radio propagation predictions for terrestrial services in the frequency range 30 MHz to 3 000 MHz. It is intended for use on tropospheric radio circuits over land paths, sea paths and/or mixed land-sea paths up to 1 000 km length for effective transmitting antenna heights less than 3 000 m. The method is based on interpolation/extrapolation from empirically derived field-strength curves as functions of distance, antenna height, frequency and percentage time. The calculation procedure also includes corrections to the results obtained from this interpolation/extrapolation to account for terrain clearance and terminal clutter obstructions.