混合扩频技术在低轨卫星通信中的仿真研究  

Simulation of Hybrid Spread Spectrum technique in LEO Satellite Communications

作　　者：黄文准[1] 王永生[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710072

出　　处：《计算机仿真》2010年第1期150-153,201,共5页Computer Simulation

基　　金：航空科学基金项目(2007ZC53030)

摘　　要：低轨卫星通信系统是未来卫星通信的一个发展方向,其抗干扰技术是目前国内外研究的热点课题。首先描述了低轨卫星通信的主要传播环境,确定了对应的信道模型及其典型仿真值,然后提出了一种混合直扩/跳频扩谱方案,基于系统级动态仿真软件SystemVue2006建立了方案的仿真模型,并在不同环境、不同干扰样式下对方案的抗干扰性能进行了仿真与分析。仿真结果表明提出的方案适合低轨卫星信道环境,具有较强的抗多音干扰能力,对改善低轨卫星通信的抗干扰性能具有一定的参考价值。The low earth orbit（LEO） satellite communication system is one of the future development directions in satellite communication,the anti-jamming technology is a domestic and overseas hotspot currently.Firstly,the main transmission environments of LEO satellite communications were described,and the relevant channel models and typical simulation parameters were introduced.Secondly,a hybrid direct sequence frequency hopping spread spectrum（DS/FH SS） scheme was proposed.Based on system-level dynamic simulation station SystemVue 2006,a simulation model of the proposed scheme was presented,and then anti-jamming performance simulation and analysis were carried out in different environments and jamming modes.The SystemVue simulation proves that the proposed scheme can be suited to the LEO satellite communication channel and possesses stronger anti-jamming capability under the condition of multi-tone jamming,and the research of the thesis is of referece value to the anti-jamming performance enhancement of LEO satellite communication.

关 键 词：低轨卫星通信 混合扩频技术 动态仿真 信道模型 抗干扰 

分 类 号：V474.2[航空宇航科学与技术—飞行器设计] TN973.3[电子电信—信号与信息处理]