Elevation Angle Influence in Geostationary and Non-Geostationary Satellite System

R. K. Ahmed, Huda Ibrahim Hamd
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引用次数: 1

Abstract

Earth stations elevation angle of antenna have to be established in order to communicate with satellites. In spite of crucial impairments in the uplink and down link of satellite communication between earth station and satellite such as noise, rain and atmospheric attenuations still earth station elevation angle is a key limiting factor to specify the communication link budget. In this paper, comparative study of satellite communication attenuation resulting from earth station elevation angle for geostationary and non-geostationary satellite system is presented. The present of free electrons in ionosphere is the impact factor to attenuate the radio wave when the high frequency radio waves penetrate it. Using MATLAB, the results report that the minimum elevation angle is about 5 ͦ but this makes negligible difference to the maximum value of transmission path when θ=0.
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静止与非静止卫星系统的仰角影响
为了与卫星通信,必须建立地面站天线仰角。尽管地面站与卫星之间的卫星通信上行链路和下行链路存在噪声、降雨和大气衰减等关键缺陷,但地面站仰角仍然是确定通信链路预算的关键限制因素。本文对静止与非静止卫星系统中地面站仰角对卫星通信衰减的影响进行了比较研究。当高频无线电波穿透电离层时,电离层中自由电子的存在是使无线电波衰减的影响因素。使用MATLAB,结果表明最小仰角约为5º,但当θ=0时,这对传输路径最大值的影响可以忽略不计。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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