Abstract
In this paper, a new two-dimensional nested cylindrical array is proposed. According to the characteristic of cylindrical array, the two-dimensional rectangular nested array is extended to build the 2D sparse cylindrical array. Comparing with the one-dimensional sparse cylindrical arrays, this new structure could save more elements than the 1D sparse cylindrical array. Moreover, simulation results show that through augmented matrix MUSIC approach, 2D sparse cylindrical array could also detect all targets in the range, even if the number of targets is larger than the number of real elements in the array. However, both the uniform cylindrical array and the 1D sparse cylindrical arrays couldn’t find all the sources.
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