ITU-R QUESTION 205-1/3-1995
跨层系统所需的传播数据和预测方法

Propagation data and prediction methods required for trans-horizon systems

ITU-R QUESTION 205-1/3-1995 发布历史

The ITU Radiocommunication Assembly considering a)that, in the planning of a digital communication network, it is necessary to define the overall system performance and availability achieved for a given percentage of the time;b)that designers of radio systems in the VHF (metric), UHF (decimetric) and SHF (centimetric) bands require to know, from the viewpoint of sustained satisfactory operation, the tropospheric propagation characteristics and the resulting transmission loss that is not exceeded for a large percentage of the time for each particular frequency band, over the distance corresponding to the service range, which may extend from about 100 km to more than 500 km.

ITU-R QUESTION 205-1/3-1995由国际电信联盟 IX-ITU 发布于 1995-01-01。

ITU-R QUESTION 205-1/3-1995 在中国标准分类中归属于: M10 通信网综合。

ITU-R QUESTION 205-1/3-1995的历代版本如下：

• 1995年01月01日 ITU-R QUESTION 205-1/3-1995 跨层系统所需的传播数据和预测方法

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标准号

ITU-R QUESTION 205-1/3-1995

发布日期

1995年01月01日

实施日期

废止日期

无

中国标准分类号

M10

发布单位

IX-ITU

适用范围

The ITU Radiocommunication Assembly considering a)that, in the planning of a digital communication network, it is necessary to define the overall system performance and availability achieved for a given percentage of the time;b)that designers of radio systems in the VHF (metric), UHF (decimetric) and SHF (centimetric) bands require to know, from the viewpoint of sustained satisfactory operation, the tropospheric propagation characteristics and the resulting transmission loss that is not exceeded for a large percentage of the time for each particular frequency band, over the distance corresponding to the service range, which may extend from about 100 km to more than 500 km.