直扩通信单频强干扰抑制技术研究  

Research on strong tone jamming suppression techniques in DSSS communication

作　　者：柳华[1] 柳玉玲[1] 

机构地区：[1]陕西中医药大学,陕西咸阳712046

出　　处：《信息技术》2016年第8期106-109,113,共5页Information Technology

摘　　要：扩频技术具有良好的抗干扰性能、高保密性以及低截获率等特性,在各种通信系统中得到了广泛的应用。扩频系统自身的扩频增益使其具备一定的抗干扰能力,但由于技术的限制以及频谱资源的紧缺,其对窄带强干扰不能有效的抑制。本文提出了一种直扩系统单频强干扰的抑制方法,通过锁频环对干扰进行频率跟踪,实时调整系统参数,对接收到的信号在跟踪频率处做陷波处理。仿真表明,该方法对单频强干扰具有良好的抑制能力。Spread spectrum technology is widely used in all kinds of communication systems by its good anti-interference performance,high security and low capture rate. The spread spectrum gain of spread spectrum system itself makes it have a certain anti-interference ability,but because of the limitation of technology and the shortage of spectrum resources,it can 't effectively suppress strong narrow-band interference. This paper proposes a method of strong tone jamming suppression in DSSS system,it tracks the frequency of jamming by frequency locked loop,adjusts system parameters in real time and then a notch processing is done for the received signal at the tracking frequency. The simulation shows that this method has a good ability of strong tone jamming suppression.

关 键 词：扩频系统 单频强干扰 频率跟踪 陷波 

分 类 号：TN973[电子电信—信号与信息处理]