一种卫星扩频保密通信系统的Systemview仿真

摘要

Satellite communication develops rapidly in recent years for its long communication distance,wide coverage area,mobile and flexible,stable and reliable communication lines.Now it has become a powerful morden communication means.Meanwhile,compared to other communication technologies,spread spectrum communication technology has the advantages such as anti-jamming and anti-noise,low probability of intercept,strong secrecy and being used for multiple-access jamming.The combination of these two technologies is one of the research focus of modern military anti-jamming communications.This paper simulates a satellite baseband transmitting/receiving subsystem with direct sequence spread spectrum,and discusses the performance.%卫星通信以其通信距离远、覆盖面积大、机动灵活、通信线路稳定可靠等优点在近几年得到迅速的发展,目前已经成为一种强有力的现代化通信手段。而扩频通信技术又有着抗干扰、抗噪声能力强,低截获概率,保密性强,可用于多径干扰等优点。两者的结合是现代军事抗干扰通信的研究热点之一。使用Systemview作为仿真平台,仿真了一个直接扩频的卫星基带发送/接收系统,并讨论了其性能。