Sheng Liu1, *, Hailin Cao2, Decheng Wu2, Xiyuan Chen3
CMC-Computers, Materials & Continua, Vol.64, No.1, pp. 589-605, 2020, DOI:10.32604/cmc.2020.09964
Abstract Arranging multiple identical sub-arrays in a special way can enhance degrees
of freedom (DOFs) and obtain a hole-free difference co-array (DCA). In this paper, by
adjusting the interval of adjacent sub-arrays, a kind of generalized array architecture with
larger aperture is proposed. Although some holes may exist in the DCA of the proposed
array, they are distributed uniformly. Utilizing the partial continuity of the DCA, an
extended covariance matrix can be constructed. Singular value decomposition (SVD) is
used to obtain an extended signal sub-space, by which the direction-of-arrival (DOA)
estimation algorithm for quasi-stationary signals is given. In order to eliminating… More >
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