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中文核心期刊

Volume 47 Issue 2
Mar.  2022
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SUN Dajun, HOU Kaiyang, TENG Tingting, MEI Jidan, LIU Huimin, LI Yecheng. Small moving target interference suppression detection method in space-time Doppler frequency shift domain[J]. ACTA ACUSTICA, 2022, 47(2): 161-174. DOI: 10.15949/j.cnki.0371-0025.2022.02.006
Citation: SUN Dajun, HOU Kaiyang, TENG Tingting, MEI Jidan, LIU Huimin, LI Yecheng. Small moving target interference suppression detection method in space-time Doppler frequency shift domain[J]. ACTA ACUSTICA, 2022, 47(2): 161-174. DOI: 10.15949/j.cnki.0371-0025.2022.02.006
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Small moving target interference suppression detection method in space-time Doppler frequency shift domain

  • 1. Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001;

  • 2. Key Laboratory of Marine Information Acquisition and Security(Harbin Engineering University), Ministry of Industry and Information Technology, Harbin 150001;

  • 3. College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001;

  • 4. East China Research Institute of Electronic Engineering, Hefei 230088;

  • 5. The 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050081

More Information
  • PACS: 
    • 43.58  (Acoustical measurements and instrumentation)
    • 43.30  (Underwater sound)
    • 43.60  (Acoustic signal processing)
  • Received Date: July 22, 2021
  • Revised Date: December 01, 2021
  • Available Online: June 28, 2022
  • Published Date: March 14, 2022
    Graphical Abstract
    • Abstract
  • Active sonar can separate clutter,reverberation and moving targets in the Doppler frequency shift domain by using Doppler sensitive signals,but time leakage and Doppler leakage of strong interference will overwhelm weak targets at low signal-to-interference ratio.Therefore,a small moving target interference suppression detection method based on adaptive Least Mean Square(LMS)algorithm and Wideband Ambiguity Function(WAF)is proposed.Firstly,the adaptive notch filter based on LMS is used to suppress interference in the spatial Doppler frequency shift domain,and then WAF is used to detect targets in the fast-time Doppler frequency shift domain.Numerical simulation and pool experiment are carried out.Simulation results demonstrate that the proposed method can effectively suppress strong interference,and accurately estimate the target delay and Doppler frequency shift.It can obtain about 13 dB interference suppression ability in the experiment.Moreover,it can tolerate interference fluctuation with normalized amplitude fluctuation variance less than 0.5,and improves the active detection ability to small moving targets.
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