根据西非十年卫星气象资料估算无线电折射率
Estimation of Radio Refractivity from a Decade Satellite Derived Meteorological Data for West Africa
摘要：
无线电活动是指无线电信号在介质中传播时发生的弯曲，在点对点微波通信、地面广播电视、移动通信系统、这项研究的重点是西非地区，发现该地区的生物活动随高度呈指数变化，从海岸到沙漠一般来说，整个区域的太阳活动梯度在-46.48和-29.51 N单位/km之间（k因子值在1.23和1.42之间），将亚折射和超折射分开。折射类型的变化被发现遵循整个西非地区的季节性模式，亚折射占主导地位，在旱季和超折射占主导地位的大部分在沿海地区在雨季。
英文摘要：
Radio refractivity, which is the bending of radio signal as it propagates through media, is very important in works involving terrestrial atmospheric electromagnetic propagation such as point-to-point microwave communication, terrestrial radio and television broadcast, mobile communication system, and so on. This study has focused on the West African region where it was found that the region has a refractivity which varies exponentially with height and from the coast towards the desert. Generally, refractivity gradient was found to range between -46.48 and -29.51 N-units/km (k-factor value of between 1.23 and 1.42) across the region, splitting the between sub- and super-refraction. The variation in refraction type was found to follow seasonal pattern across the West African region, with sub-refraction dominating during dry season and super-refraction dominating most part in the coastal area during the wet season.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
