低频段大气噪声及处理技术  

Atmospheric-noise at low frequency and its processing technique

作　　者：张杨勇[1] 刘勇[1] 

机构地区：[1]武汉船舶通信研究所,湖北武汉430079

出　　处：《舰船科学技术》2008年第B11期85-88,共4页Ship Science and Technology

摘　　要：大气噪声是低频段通信系统的主要噪声来源。本文介绍了大气噪声的产生和传播原理,结合实测数据研究了噪声的脉冲特性及规律等。论证了非线性处理方法提高通信信噪比的原理,并通过削波仿真实验提高含实测噪声信号的信噪比。该方法在实际通信系统中易于实现,能够改善系统性能。Atmospheric-noise is the main noise of low frequency communication system. In this paper,we introduced its generation and propagation principle, and analysed its spikey characteristics with recorded data. We discussed a noise processing approach using nonlinearity processing,it confirms that nonlinearity can achieve an improvement in signal-to-noise ratio. Moreover, this approach can flexibly implement in a real communication system,and efficiently improve the performance of system.

关 键 词：大气噪声 削波 低频通信系统 

分 类 号：TN913[电子电信—通信与信息系统]