高轨卫星通信系统链路预算模型设计

Link Budget Analysis of High-Orbit Satellite Communication Systems

摘要:

基于高轨卫星通信系统链路的轨道特性和传输损耗规律,对卫星通信系统的链路模型展开系统性分析；针对多参数问题,采用固定参数逐一分析的方法,分析了链路中的关键指标,并给出链路预算所涉及的核心公式；分析了不同地理位置、雨衰、天线口面尺寸对链路传输的影响,通过多种数据对链路参数关系进行计算,并给出预算结果分析；结合工程实践经验,分析了功率带宽比在实际工作中的特殊影响,对卫星链路设计具有重要的工程应用价值。

Abstract:

Based on the orbital characteristics and propagation loss patterns of the high-orbit satellite communication system link, the link model of satellite communication system is analyzed; Aiming at the multi-parameter problem, it adopts the method of analyzing fixed parameters one by one to examine the key indicators of the link, and puts forward the core formulas involved in link budget. It analyzes the impacts of different geographical locations, rain attenuation and antenna aperture sizes on link transmission, calculates the relationships between link parameters based on various data, and presents the analysis of budget results. Combined with engineering practice experience, it analyzes the special influence of power-bandwidth ratio in practical operation, which has important engineering application value for satellite link design.