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Signal steering vector (SV) error can cause desired signal cancellation in adaptive beamforming. A covariance fitting based robust Capon beamforming (CFRCB) has been developed to solve this problem. Such a solution cannot be expressed in a closed form and its performance is highly affected by the initial value of SV error norm bound. In this paper, we propose an approximate closed-form expression...
In this paper, a multi-direction virtual array transformation algorithm termed MVATA for two dimension (2D) direction of arrival (DOA) estimation is proposed. A kind of multi-direction rotation invariant virtual subarrays is firstly constructed. Secondly, by singular value decomposition (SVD) of the response matrix of the real array to signals from a sector, the interpolation matrices can be estimated...
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