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A Direct Localization Method of Multiple Distributed Sources Based on the Idea of Multiple Signal Classification
Yanqing REN Zhiyu LU Daming WANG Jian LIU
IEICE TRANSACTIONS on Communications
Publication Date: 2018/05/01
Online ISSN: 1745-1345
Type of Manuscript: PAPER
Category: Antennas and Propagation
emitter localization, distributed sources, multiple signal classification, Cramer-Rao bound, array signal processing,
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The Localization of distributed sources has attracted significant interest recently. There mainly are two types of localization methods which are able to estimate distributed source positions: two-step methods and direct localization methods. Unfortunately, both fail to exploit the location information and so suffer a loss in localization accuracy. By utilizing the information not used in the above, a direct localization method of multiple distributed sources is proposed in this paper that offers improved location accuracy. We construct a direct localization model of multiple distributed sources and develop a direct localization estimator with the theory of multiple signal classification. The distributed source positions are estimated via a three-dimensional grid search. We also provide Cramer-Rao Bound, computational complexity analysis and Monte Carlo simulations. The simulations demonstrate that the proposed method outperforms the localization methods above in terms of accuracy and resolution.