计算机应用 ›› 2016, Vol. 36 ›› Issue (3): 620-627.DOI: 10.11772/j.issn.1001-9081.2016.03.620

• 网络与通信 • 上一篇    下一篇

基于宽带非合作的突发信号存在性检测算法

汪洋, 王彬, 蒋天立, 刘怀兴, 陈婷   

  1. 信息工程大学 信息系统工程学院, 郑州 450001
  • 收稿日期:2015-08-24 修回日期:2015-10-25 出版日期:2016-03-10 发布日期:2016-03-17
  • 通讯作者: 汪洋
  • 作者简介:汪洋(1979-),男,安徽宿州人,讲师,博士,主要研究方向:信号处理、软件无线电、平台技术;王彬(1971-),女,河南郑州人,副教授,博士,主要研究方向:信号处理;蒋天立(1989-),男,四川江油人,工程师,硕士,主要研究方向:信号处理、认知无线电;刘怀兴(1978-),男,河南永城人,讲师,硕士,主要研究方向:信号处理;陈婷(1991-),女,河南永城人,硕士研究生,主要研究方向:电子技术。

Existence detection algorithm for non-cooperative burst signals in wideband

WANG Yang, WANG Bin, JIANG Tianli, LIU Huaixing, CHEN Ting   

  1. College of Information System Engineering, Information Engineering University, Zhengzhou Henan 450001, China
  • Received:2015-08-24 Revised:2015-10-25 Online:2016-03-10 Published:2016-03-17

摘要: 随着宽频带接收机的广泛应用,在宽带中非合作突发信号的盲检测越来越重要。面对低时间占空比的突发信号难以检测和高时间占空比突发信号与连续信号区分的问题,通过构建两种宽带统计谱来解决该问题:最大谱和最大差分谱。最大谱通过取瞬时频谱的最大值,保留连续信号和突发信号的功率谱信息;最大差分谱则保留前后瞬时频谱差值的最大值,能够有效地提取突发信息并且抑制连续信号。利用最大谱检测信号,利用最大差分谱辨别突发信号,实现了连续信号和不同时间占空比突发信号的宽带盲检测。最后对算法性能进行了测试,结果表明该算法能够对各种时间占空比的突发信号进行检测。

关键词: 盲检测, 突发信号, 宽带检测, 功率谱检测, 宽带盲检测

Abstract: With the extensive application of wideband receivers, the blind detection of non-cooperation burst signal in broadband is increasingly important. It is difficult to detect burst signals with low duty cycle time and to distinguish the burst signals with high duty cycle time from continuous-time signals. The problem was solved by constructing two broadband spectral statistics including maximum spectrum and maximum difference spectrum. By keeping the maximum value of instantaneous spectrum, the maximum spectrum has the information of both burst and non-burst signals; by keeping the maximum value of difference between adjacent instantaneous spectrums, the maximum difference spectrum can extract burst information and suppress continuous-time signals. By using these two spectrums, the detection of burst signals in broadband is completed. The test results show that the proposed algorithm can handle burst signals of all the duty cycle time.

Key words: blind detection, burst signal, wideband detection, power spectrum detection, broadband blind detection

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