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Acta Armamentarii ›› 2024, Vol. 45 ›› Issue (8): 2584-2593.doi: 10.12382/bgxb.2023.0394

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Construction and Characterization of Weighted Directed Association Network for Remote Detection of Underwater Targets

ZHANG Hongwei1,2, WANG Haiyan1,3,*(), YAN Yongsheng1,2, SHEN Xiaohong1,2   

  1. 1 School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China
    2 Key Laboratory of Ocean Acoustics and Sensing of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China
    3 School of Electronic Information and Artificial Intelligence, Shaanxi University of Science and Technology, Xi'an 710021, Shaanxi, China
  • Received:2023-05-06 Online:2023-09-27
  • Contact: WANG Haiyan

Abstract:

Remote detection of underwater targets is a critical technology in ocean defense systems and has significant applications in both national defense and civilian domains. However, there is currently a lack of effective methods for long-range detection of underwater targets, especially without prior knowledge of the target. To address this issue, a new detection method based on weighted directed association network, is proposed, which represents the target signal detection problem as network topology by mapping the vector acoustic signal into the weighted directed association network. The long-range detection of underwater targets without prior knowledge is achieved through the analysis of network topology characteristics and the feature extraction. The proposed method is validated through the simulated and measured data. Compared with existing narrowband mutual spectrum detection and bubble entropy methods, the proposed method can detect the underwater targets with lower signal-to-noise ratios and achieve the long-range detection without prior knowledge. The proposed method has important practical significance and application prospects and can provide the effective technical support for underwater target detection in ocean defense and civilian fields.

Key words: underwater target, long-range detection, complex network, weighted directed correlation network, non-target prior, vector acoustic signal

CLC Number: