Multi-target far and near field mixed source positioning method under unknown colored noise
The invention provides a multi-target far and near field mixed source positioning method under unknown colored noise, and belongs to the field of array signal processing. The method comprises the steps: receiving a target signal through employing a symmetric uniform linear sensor array; determining...
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Main Authors | , , , , |
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Format | Patent |
Language | Chinese English |
Published |
04.05.2016
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Subjects | |
Online Access | Get full text |
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Summary: | The invention provides a multi-target far and near field mixed source positioning method under unknown colored noise, and belongs to the field of array signal processing. The method comprises the steps: receiving a target signal through employing a symmetric uniform linear sensor array; determining the types of observation signals of far and near field mixed sources; calculating a covariance matrix of array observation data; extracting far-field and near-field source components; obtaining a corresponding noise subspace, and achieving the estimation of a far-field source azimuth angle; obtaining a near-field source difference matrix; obtaining a corresponding signal subspace; searching an estimated near-field source azimuth angle through a one-dimensional angle; substituting the estimated near-field source azimuth angle into a two-dimensional MUSIC spectrum peak search, and achieving the estimation of a near-field source distance. The method is advantageous in that the method improves the applicability of the |
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Bibliography: | Application Number: CN201610030846 |