The characteristic of cross-correlated pressure field in a wedged seafloor environment

Quan Sun, Kunde Yang, Yuanliang Ma, Yanyang Lu, Feiyun Wu, Bibo Hou

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

2 Scopus citations

Abstract

The cross-correlated striation pattern of the complex pressure field has been proved to be a stable method for estimating the radial velocity of a moving source with a single sensor in the shallow water and in the deep ocean. In this paper, the characteristic of the cross-correlated striation pattern in a wedged seafloor waveguide is studied. Based on the wave equation we demonstrate that the cross-correlated vertical striations in the frequency-range plane are caused by the interaction of direct waves at two ranges. The interface reflected waves have significant effects on the cross-correlated striations in the real waveguide. The sediment properties in a wedged seafloor environment are closely related to the bottom reflection. Simulation results show that striations in the frequency-range plane are obscure under hard sediments conditions while they are clear with soft bottom. The striation pattern is closely connected to the interface reflections. Our study provides a reference for the environment of applying the cross-correlation method.

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

  • Cross-correlated
  • Striation pattern
  • Velocity estimation
  • Wedged seafloor

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