Open AccessSpatially Close Signals Separation via Array Aperture Expansions and Spatial Spectrum Averaging
Author(s) -
Kang Heung Yong,
Kim Young Su,
Kim Chang Joo
Publication year - 2004
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.04.0203.0024
Subject(s) - separation (statistics) , aperture (computer memory) , spectrum (functional analysis) , physics , mathematics , computer science , optics , algorithm , acoustics , statistics , quantum mechanics
A resolution enhancement method for estimating the direction‐of‐arrival (DOA) of signals is presented. The proposed method is by virtually expanding a real array into virtual arrays and then averaging the spatial spectrum of the virtual arrays, each of which has a different aperture size. Superior DOA resolutions are shown in comparison with the standard algorithm, MUltiple SIgnal Classification (MUSIC), for incoherent signals incident on a uniform circular array.