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- W3135026677 abstract "Based on the joint phase interferometer and multiple signal classification (MUSIC) algorithm, two high-performance 3-dimensional (3-D) parameters estimation and localization algorithms for near field sources (NFS) are proposed in this study employing the uniform circular array (UCA). Firstly, the algebraic relation is demonstrated between the azimuth angle under the far-field assumption and the actual near-field source. Using the relation, we estimate the far-field azimuth angle using the 2-dimensional (2-D) MUSIC method and then obtain the estimation result of the azimuth angle for NFS. Secondly, we select two groups of antenna pairs whose distances are less than half of the wavelength, which are called short baselines in the interferometer method. Using a phase detector, the phase differences of the two baselines are measured, which have no phase ambiguity. Then it can estimate the elevation angle and range depending on the algebraic relations between the elevation angle, range and phase differences. The foregoing short-baseline method is qualified to localize a NF source. In addition, in order to get better performance, we propose a long-baseline method with further research. Two groups of antenna pairs whose distances are greater than half of the wavelength are selected as two long baselines. By solving the phase ambiguity, the elevation angle and range can finally be estimated with high precision. The simulation results illustrate that the proposed algorithms can achieve higher localization accuracy than the conventional 3-D MUSIC method. Moreover, the long-baseline method performs better than the short-baseline method. And it is also presented that the computational complexity of the proposed methods can be reduced owing to the fact that the 3-D spectrum peak searching process in the conventional method is not required any more." @default.
- W3135026677 created "2021-03-15" @default.
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- W3135026677 date "2020-12-01" @default.
- W3135026677 modified "2023-10-18" @default.
- W3135026677 title "Localization of 3-D Near-field Sources Based on the Joint Phase Interferometer and MUSIC Algorithm" @default.
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- W3135026677 doi "https://doi.org/10.1109/gcwkshps50303.2020.9367454" @default.
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