卫星通信系统中的抗干扰技术研究  

Study on Anti-interference Technology for Satellite Communication System

作　　者：王志军[1,2] 白旭平[3] 刘琼俐[3] 逯美红[1] 

机构地区：[1]长治学院电子信息与物理系,山西长治046011 [2]太原理工大学信息工程学院,山西太原030024 [3]太原卫星发射中心,山西岢岚036301

出　　处：《通信技术》2012年第7期10-13,共4页Communications Technology

摘　　要：卫星通信是军事通信的重要组成部分,在复杂电磁环境下,卫星通信的环境又是十分恶劣的,它容易受到敌方的侦收、干扰和攻击等威胁。文中重点对现代卫星通信系统中最常用的抗干扰技术——直接序列扩频技术和跳频技术的基本原理进行了研究分析,给出了简单的仿真结果并总结了这两项技术各自的特点。这两类技术的共同特点是信号的频谱在发送时得到了扩展,在接收方又恢复为原来的宽度。这两项技术是保证战争中己方通信畅通的关键技术,在军事通信中有着极为重要的意义。Satellite communication, as an important component of military communication and in the complicated electromagnetic environment, faces many threats from the adversary, including interception, interference and attack. This paper focuses on the principle of DSSS （direct sequence spread spectrum） and frequency-hopping technology while gives the simulation results and characteristics of DSSS and the frequency-hopping technology. These two technologies both feature spectrum spread during signal sending and original width recovery during signal receiving. They could ensure the smooth communication of one＇ s own side in the war, and thus are of important significance in military communications.

关 键 词：卫星通信 抗干扰 扩展频谱 直接序列扩频 跳频 

分 类 号：TN915.04[电子电信—通信与信息系统]