基于独特码符号距离的TDMA突发检测算法  

TDMA Burst Detection Method Based on Unique Code Symbol Distance

作　　者：彭源 孙超超 张挺 李红娇 PENG Yuan;SUN Chaochao;ZHANG Ting;LI HongJiao(School of Computer Science and Technology,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力大学计算机科学与技术学院,上海200090

出　　处：《上海电力大学学报》2020年第4期391-394,共4页Journal of Shanghai University of Electric Power

摘　　要：突发信号检测有助于提高通信线路的利用率,或为监听、攻击及干扰线路提供信息基础。现有的检测算法往往需要信号模板等先验知识,且计算复杂度高。针对具有独特码结构的海事卫星时分多址(TDMA)信号,分析了其星座图的特点,研究了独特码符号之间的相位差特征,提出了一种基于独特码符号距离的突发检测算法。该算法无需使用信号模板,且统计量的计算复杂度低。实验表明,该算法能有效地检测出突发信号,且在低信噪比的情况下也能取得较好的检测效果。Burst signal detection can help improve the utilization of communication lines or provide an information basis for monitoring,attacking,and interfering lines.Existing detection algorithms often require prior knowledge such as signal templates,and have high time complexity.This paper analyzes the characteristics of the constellation diagram of Maritime satellite TDMA signals with unique code structure,studies the characteristics of phase difference between unique code symbols,and proposes a burst detection algorithm based on the distance of unique code symbols.It does not require the use of signal templates,and the calculation complexity of statistics is low.Experiments show that the algorithm can effectively detect the burst signal,and can achieve better detection results under the condition of low signal noise ratio.

关 键 词：独特码 距离度量 突发信号检测 

分 类 号：G2[文化科学]