Open AccessExtended‐aperture DOA estimation with unknown number of sources
Author(s) -
Tian Ye,
Xu He
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2014.4293
Subject(s) - estimation , aperture (computer memory) , computer science , algorithm , mathematics , electronic engineering , acoustics , engineering , physics , systems engineering
Most of the existing direction‐of‐arrival (DOA) estimation methods require a priori knowledge of the source number, and can only estimate M − 1 sources with M sensors. A novel technique for a sparse signal reconstruction framework is proposed, which is unbiased and can extend the array aperture effectively. As a result, the proposed technique can not only estimate 2( M − 1) sources with M sensors, but also provide improved resolution and estimation accuracy. It can even obtain DOA estimation without knowing the number of sources.