Seismic shape parameters estimation and ground-roll suppression using vector-sensor beamforming

Daniela Donno, Umberto Spagnolini, Arye Nehorai

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

4 Scopus citations

Abstract

This paper addresses the problem of estimating the shape parameters of seismic wavefields in linear arrays. The purpose is to separate waves by exploiting the diversity of the polarization state and propagation velocity between waveflelds. In this paper, we propose a method based on the shift-invariance properties of multiple waveflelds impinging on a uniform linear array of sensors to separate different waves by jointly estimating the velocity and polarization parameters. The surface waves are removed using a spatial filter specifically designed to exploit velocity and polarization of different waves. We introduce a model for wideband polarized signals received by an array of three-component vector-sensors and use it as a framework for implementing the proposed algorithms. Moreover, we analytically derived Cramér-Rao lower bounds on the performance of the proposed model parameters. Examples using simulated and experimental data illustrate the applicability of the proposed methods.

Original languageEnglish
Title of host publicationOCEANS 2006
DOIs
StatePublished - 2006
EventOCEANS 2006 - Boston, MA, United States
Duration: Sep 18 2006Sep 21 2006

Publication series

NameOCEANS 2006

Conference

ConferenceOCEANS 2006
Country/TerritoryUnited States
CityBoston, MA
Period09/18/0609/21/06

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