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- W3157811516 abstract "We present extended Cantor arrays based on fourth- order difference co-arrays (E-FO-Cantor). These arrays result from extending the recently proposed fractal arrays to fourth- order difference co-arrays, and lead to fourth-order difference co-arrays that are hole-free. The set of sensor positions of the E-FO-Cantor is expressed in a simple and recursive form. The proposed Cantor arrays lead to O(N <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>log2</sup> <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</sup> ) ≈ O(N <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3.17</sup> ) degrees of freedom compared to O(N <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> ) that can be achieved by existing sparse arrays with the hole-free property. Compared with other sparse arrays with the hole-free property in their fourth-order co-arrays, the proposed Cantor arrays provide a longer uniform linear array with more virtual sensors, leading to better DOA estimation performance." @default.
- W3157811516 created "2021-05-10" @default.
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- W3157811516 date "2021-05-01" @default.
- W3157811516 modified "2023-10-14" @default.
- W3157811516 title "Extended Cantor Arrays with Hole-Free Fourth-Order Difference Co-Arrays" @default.
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- W3157811516 doi "https://doi.org/10.1109/iscas51556.2021.9401739" @default.
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