基于仿真对透明转发器的干扰分析  

Interference Analysis of Transparent Satellite Repeater Based on Simulation

作　　者：李岱若 徐慨[1] 杨海亮[1] 李奇 

机构地区：[1]海军工程大学电子工程学院,湖北武汉430033

出　　处：《指挥控制与仿真》2017年第5期93-99,共7页Command Control & Simulation

摘　　要：卫星通信系统旨在为接收方传送高质量的信号,确保双方正常通信。一条基本的卫星链路主要由发端地球站、上行链路、卫星转发器、下行链路和收端地球站所组成。由于卫星通信采用远距离通信,而传输信号的功率与传输距离的平方成反比,因此卫星转发器接收和转发的信号都很微弱,容易受到干扰和破坏。在对卫星通信系统进行侦收分析的基础上,对卫星转发器的干扰进行了研究。从转发器干扰功率分析和转发器干扰下的链路性能分析入手,通过仿真对透明转发器在欠饱和线性状态和过饱和非线性状态下不同的ρ(ρ为干扰信号占转发器总带宽的ρ部分频带)时受干扰的信道输入端的载噪比与上行干信比之间的关系进行分析,找到干扰信号占带宽比例和干扰效果以及干扰覆盖区域之间的关系,为下一步干扰机的设计与改进提供了一定的基础。The satellite communication system is designed to transmit high-quality signals to the receiver to ensure proper communication between the two parties. A basic satellite link consists mainly of originating earth stations,uplinks,satellite transponders,downlink and end-of-earth stations. Since the satellite communication uses long-distance communication,and the power of the transmission signal is inversely proportional to the square of the transmission distance,the signal received and forwarded by the satellite transponder is very weak and susceptible to interference and destruction. In this paper,based on the investigation and analysis of the satellite communication system,the interference of satellite transponders is studied.Based on the analysis of the link performance under transponder interference power and transponder interference,the different ρ（ ρ is the interference signal to the total bandwidth of the transponder） in the under-saturated linear state and the supersaturated nonlinear state of the transparent transponder Ρ part of the frequency band）,and the relationship between the interference ratio and the interference coverage and the interference coverage area is found. The relationship between the interference signal and the interference coverage area is analyzed. Design and improvement provide a certain basis.

关 键 词：卫星通信 转发器干扰 载波与噪声干扰比 干扰功率 

分 类 号：E917[军事]