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- W2158212803 abstract "Based on the beamspace transform and the rank reduction theory (RARE), a fast direction of arrival (DOA) estimation algorithm in the presence of an unknown mutual coupling is proposed for uniform circular arrays (UCAs). Via relying on the circular symmetry and expanding the mutual coupling into a limited number of phase modes, the azimuth estimates are able to be obtained without the exact knowledge of mutual coupling. Then, by using the special structure of mutual coupling matrix and the characteristic of mutual coupling coe-cients, the elimination of spurious estimates and estimations of the mutual coupling coe-cients are able to be handled simultaneously. The Propagator Method (PM) is used to avoid the eigenvalue decomposition. The RARE matrix of PM allows decreasing the computation cost via using a well known identity for block matrices. Moreover, an implementation of rooting polynomial substitutes the one-dimension search. Therefore, the computation burden is greatly reduced. Numerical examples are presented to demonstrate the efiectiveness of the proposed method." @default.
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- W2158212803 date "2011-01-01" @default.
- W2158212803 modified "2023-10-14" @default.
- W2158212803 title "A FAST DOA ESTIMATION ALGORITHM FOR UNIFORM CIRCULAR ARRAYS IN THE PRESENCE OF UNKNOWN MUTUAL COUPLING" @default.
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- W2158212803 doi "https://doi.org/10.2528/pierc11042606" @default.
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