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In this paper, we propose angle of arrival estimation algorithms for arbitrary array geometries. The proposed methods extend the root-WSF and modified variable projection (MVP) algorithms to arbitrary array configurations. This is accomplished by employing the recently introduced manifold separation technique (MST), which stems from wavefield modelling. The algorithms process the data in the element-space...
In this paper, we consider the manifold separation technique (MST), which stems from the wavefield modeling formalism developed for array processing. MST is a method for modeling the steering vector of antenna arrays of practical interest with arbitrary 2-D or 3-D geometry. It is the product of a sampling matrix (dependent on the antenna array only) and a Vandermonde structured coefficients vector...
In this paper we present a procedure for reducing the excess variance introduced by beamspace transform when it is applied to uniform circular array (UCA). Several algorithms for direction of arrival (DoA) estimation exploit modal transforms which are based on the phase-mode excitation principle (D.E.N. Davies, 1983). Here we analyze the inverse Fourier series of the array impulse response, called...
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