电子学报 ›› 2017, Vol. 45 ›› Issue (6): 1356-1361.DOI: 10.3969/j.issn.0372-2112.2017.06.011

• 学术论文 • 上一篇    下一篇

对信号长度不敏感的瞬态信号检测方法

游波1, 蔡志明2   

  1. 1. 武昌工学院信息工程系, 湖北武汉 430065;
    2. 海军工程大学水声工程系, 湖北武汉 430033
  • 收稿日期:2015-10-08 修回日期:2016-03-01 出版日期:2017-06-25
    • 作者简介:
    • 游波 女,1976年11月出生,江苏泰州人,博士,讲师,主要研究方向为海洋物理、主动声纳抗混响抗多途信号处理和水下被动目标瞬态特征检测技术研究.邮箱:bbyouyou2002@aliyun.com;蔡志明 男,1962年11月出生,浙江湖州人,教授,博士生导师,从事水声信号处理、海洋声学建模与声纳测试、声纳系统技术、声纳作战效能评估等方面的教学和科研.
    • 基金资助:
    • 国防973基础科学研究计划 (No.6132200302); 国家自然科学基金 (No.6419014)

A Transient Detection Method Independent of Unknown Signal Length

YOU Bo1, CAI Zhi-ming2   

  1. 1. Department of Information Engineering, Wuchang Institute of Technologe, Wuhan, Hubei 430065, China;
    2. Department of Underwater Acoustics Engineering, Naval University of Engineering, Wuhan, Hubei 430033, China
  • Received:2015-10-08 Revised:2016-03-01 Online:2017-06-25 Published:2017-06-25
    • Supported by:
    • National Program on Key Basic Research Project of China  (973 Program) (No.6132200302); National Natural Science Foundation of China (No.6419014)

摘要:

针对检测未知长度瞬态信号时累积和方法性能下降的问题,提出对瞬态信号长度不敏感的累积和检测方法.首先建立信号长度失配累积和方法检测模型,然后比较了该方法和常规累积和方法在长度匹配和失配情况下的理论和仿真检测性能,并利用海试单通道波束形成后数据对两种方法进行了比较.结果表明,本文所述方法对未知长度瞬态信号检测性能稳定,且优于长度失配时的常规累积和方法.

关键词: 累积和检验, 瞬态信号检测, 未知信号长度, 被动声纳检测

Abstract:

The performance of the Page Test decreases without the exact knowledge of the transient signal length.A new method independent of the signal length is proposed in this paper.The detector of unmatched signal length of the Page Test is modeled at first.Then the theoretical detection performance and the simulative one of the new method are compared to the general Page Test while detecting the unknown length transient signal.The experiment data on the sea of certain bearing channel after beamforming are exploited to compare these two methods.The result shows that the performance of the method proposed in this paper is more stable than the general Page Test without the exact knowledge of the transient signal length.

Key words: Page Test, transient signal detection, unknown signal length, passive sonar detection.

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