A fast sea interface reverberation suppression method based on unitary transformation

Yue Qin Li*, Jin Ping Li, Lei Han

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The low-rank structure reverberation suppression algorithm is a better method to restrain the sea interface reverberation. But the data processing speed of the method is very slowly due to the complexity of singular value decomposition. It can not meet the real-time requirement in actual application. This article present a signal subspace fast approximation method based on unitary transformation which can estimate the reverberation subspace rapidly. This method transform array data matrix to real matrix using the center symmetry of uniform linear array and unitary transformation at first. Then it calculates singular value and eigenvalue decomposition of the real matrix . Signal subspace can be estimated using the method of rational approximation finally. The method's computation is little comparatively and can improved the operation speed greatly. The conclusions of the experiments show that the algorithm has a higher operation speed meanwhile suppress the reverberation effectively.

Original languageEnglish
Title of host publicationProceedings - 2010 International Conference on Digital Manufacturing and Automation, ICDMA 2010
Pages3-6
Number of pages4
DOIs
Publication statusPublished - 2010
Event2010 International Conference on Digital Manufacturing and Automation, ICDMA 2010 - Changsha, China
Duration: 18 Dec 201020 Dec 2010

Publication series

NameProceedings - 2010 International Conference on Digital Manufacturing and Automation, ICDMA 2010
Volume1

Conference

Conference2010 International Conference on Digital Manufacturing and Automation, ICDMA 2010
Country/TerritoryChina
CityChangsha
Period18/12/1020/12/10

Keywords

  • Eigenvalue
  • Sea interface reverberation
  • Singular value decomposition
  • Subspace
  • Unitary transformation

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