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A Novel Method for Near-Field Source Localization in Impulsive Noise Environments

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Abstract

The joint estimation of direction of arrival and range for a near-field source in impulsive noise environments remains unaddressed in array signal processing. Inspired by the robustness of phased fractional lower-order moment and the efficiency of generalized estimation of signal parameters via rotational invariance techniques, a novel near-field source localization method is proposed. To reduce the computational complexity, the estimated parameters are determined by the roots of a polynomial rather than searching for the peaks of the spectrum. To characterize its performance, the Cramér–Rao bounds for the estimated parameters of near-field sources in Cauchy noise environments are derived. Compared with existing methods, the proposed method can avoid spectral peak search, loss of array aperture, and parameter pairing. The simulation results demonstrate that the proposed method is superior to existing methods in terms of the probability of resolution and the estimation accuracy, especially in low generalized signal-to-noise ratio and highly impulsive noise environments.

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Authors and Affiliations

  1. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian, 116024, China

    Tianshuang Qiu & Peng Wang

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  1. Tianshuang Qiu
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  2. Peng Wang
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Correspondence to Peng Wang.

Additional information

This work is supported by the National Natural Science Foundation of China under Grants 61172108, 61139001, and 81241059.

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Qiu, T., Wang, P. A Novel Method for Near-Field Source Localization in Impulsive Noise Environments. Circuits Syst Signal Process 35, 4030–4059 (2016). https://doi.org/10.1007/s00034-015-0234-y

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  • DOI: https://doi.org/10.1007/s00034-015-0234-y

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