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- W4224931303 abstract "This paper proposes a novel method to focus or align array manifolds at different frequencies to a single reference frequency in wideband direction of arrival (DOA) estimation. Unlike existing methods, our focusing can be performed without explicitly constructing focusing matrices, or requiring any preliminary DOA estimates. Instead the focusing is done implicitly by obtaining focused measurements as the solution to a rank minimization procedure. This paper also provides theoretical guarantees for exact focusing via rank minimization. We call this procedure Initialization-Free Implicit-Focusing (IF <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> ). Numerical simulations are provided to demonstrate the resilience of IF <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> in various SNR regimes compared to past and recent wideband DOA recovery methods, and its lack of error saturation in high SNR regimes <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>1</sup> ." @default.
- W4224931303 created "2022-04-28" @default.
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- W4224931303 date "2022-05-23" @default.
- W4224931303 modified "2023-10-16" @default.
- W4224931303 title "Initialization-Free Implicit-Focusing (IF<sup>2</sup>) for Wideband Direction-of-Arrival Estimation" @default.
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- W4224931303 doi "https://doi.org/10.1109/icassp43922.2022.9746772" @default.
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