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Array analysis of seismic signals
Author(s) -
Goldstein Peter,
Archuleta Ralph J.
Publication year - 1987
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl014i001p00013
Subject(s) - seismometer , amplitude , signal (programming language) , acoustics , measure (data warehouse) , interpretation (philosophy) , plane (geometry) , multiple signal classification , geology , signal processing , homogeneous , computer science , algorithm , seismic wave , seismology , physics , mathematics , optics , telecommunications , geometry , data mining , statistical physics , radar , antenna (radio) , programming language
In this paper we present a method for analyzing seismic signals recorded at an array of seismometers. The method is based on the multiple signal characterization (MUSIC) method. Four important features of this approach are: (1) it has the ability to resolve multiple closely spaced sources, (2) it works with both stationary, and nonstationary signals, (3) it is most sensitive to the strongest sources, and (4) it provides a geometric interpretation of the solution to the direction finding problem. We have developed a numerical algorithm that extends the MUSIC method to nonstationary and correlated signals. We present results using this algorithm to measure directions of arrival and amplitudes of multiple plane waves in a homogeneous medium.