Three attenuation statistics combination methods are evaluated and compared in this contribution for the first time using a consistent set of propagation data used as input and as a reference to test the methods’ performance. The three approaches, which rely upon different statistical assumptions, aim at estimating the total tropospheric attenuation statistics by combining the complementary cumulative distribution functions of the attenuation associated to the different tropospheric impairments, namely clouds, gases, rain, and scintillations. The prediction performance tests are conducted, using as reference, the propagation data (19.7 and 39.4 GHz) collected in Milan, Italy, in the framework of the Alphasat Aldo Paraboni propagation experiment during 2017 and 2018. Results indicate that the combination method included in the inforce recommendation ITU-R P.618-13 provides the highest performance at both bands.

中文翻译：

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结合影响EHF地空链路的不同对流层效应的衰减统计

首次使用一组一致的传播数据作为输入和参考来评估和比较三种衰减统计组合方法，以测试方法的性能。这三种方法依赖于不同的统计假设，旨在通过结合与不同对流层损伤（即云、气体、雨和闪烁）相关的衰减的互补累积分布函数来估计总对流层衰减统计数据。预测性能测试是在 2017 年和 2018 年期间在 Alphasat Aldo Paraboni 传播实验框架内使用在意大利米兰收集的传播数据（19.7 GHz 和 39.4 GHz）作为参考进行的。