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Volume 34 Issue 4
Jul.  2022
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ZHU Daizhu, DU Xuanmin. The port/starboard discrimination based on line-spectrum character in towed line array with hydrophone triplets[J]. ACTA ACUSTICA, 2009, 34(4): 296-302. DOI: 10.15949/j.cnki.0371-0025.2009.04.005
Citation: ZHU Daizhu, DU Xuanmin. The port/starboard discrimination based on line-spectrum character in towed line array with hydrophone triplets[J]. ACTA ACUSTICA, 2009, 34(4): 296-302. DOI: 10.15949/j.cnki.0371-0025.2009.04.005
shu

The port/starboard discrimination based on line-spectrum character in towed line array with hydrophone triplets

  • 1. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University Shanghai 200240;

  • 2. Shanghai Marine Electronic Equipment Research Institute Shanghai 201108

More Information
  • PACS: 
    • 43.30  (Underwater sound)
    • 43.60  (Acoustic signal processing)
  • Received Date: November 11, 2008
  • Revised Date: March 17, 2009
  • Available Online: July 05, 2022
    Graphical Abstract
    • Abstract
  • The energy's ratio of broadband is utilized for port/starboard discrimination in towed line array with hydrophone triplets in tradition.It can satisfy the need in most conditions except for two cases:One is low signal to noise ratio(SNR),and the other is that there is a stronger interfering target lied on the other side of the line array with approximate bearing.A new method called line-spectrum character extracting is proposed to discriminate port/starboard for these two cases in this paper,and the SNR needed for port/starboard discrimination is reduced sharply.Simulation and the sea-trial data are analyzed to show that the method is stable and valid,and it's expected to have application in practical towed line array sonar.A line-spectrum enhancing technology with lower calculation complexity and stable validity is proposed to ensure its application in lower SNR.
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