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In this paper, the characteristics of two different uniformly spaced circular arrays are analyzed, including the beam width, the sidelobe peak level, the resolution and the Cramer-Rao bound(CRB) of the array. Firstly, according to the structure of the dual circular array, the formula of array pattern, the formula of resolution and the formula of CRB are deduced. Secondly, the effects of the elements...
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