A Deconvolved method for suppressing the sidelobes in the DOA Estimation

Lei Xie, Chao Sun, Jie Zhuo, Xionghou Liu, Dezhi Kong, Kuan Fan

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

2 Scopus citations

Abstract

Conventional beamforming (CBF) is one of the most important nodes in the underwater array signal processing. For the direction of arrival (DOA) estimation, CBF is robust but it suffers from the wide beamwidths and the high sidelobe levels. The background levels of bering-time recording (BTR) using CBF algorithm are high when the signal-to-noise ratio (SNR) of the receiving data is low. This paper proposes a deconvolved conventional beamforming (ADDCBF) for suppressing the sidelobes levels of CBF in the DOA estimation. The algorithm utilizes an analogous impulse function as the point scattering function (PSF), and then the direction of the source can be estimated by iterating the azimuth spectrum of CBF based on the Richardson-Lucy (R-L) algorithm. ADDCBF yields the narrow beams and the low sidelobe levels than CBF. The performance of ADDCBF are verified by the numerical simulations and the data collected by a horizontal linear array during an experiment in the South China Sea.

Original languageEnglish
Title of host publication2018 OCEANS - MTS/IEEE Kobe Techno-Oceans, OCEANS - Kobe 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538616543
DOIs
StatePublished - 4 Dec 2018
Event2018 OCEANS - MTS/IEEE Kobe Techno-Oceans, OCEANS - Kobe 2018 - Kobe, Japan
Duration: 28 May 201831 May 2018

Publication series

Name2018 OCEANS - MTS/IEEE Kobe Techno-Oceans, OCEANS - Kobe 2018

Conference

Conference2018 OCEANS - MTS/IEEE Kobe Techno-Oceans, OCEANS - Kobe 2018
Country/TerritoryJapan
CityKobe
Period28/05/1831/05/18

Keywords

  • Conventional beamforming
  • Deconvolved
  • Sidelobe levels

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