EngineeringComputer ScienceAlgorithmsAntennasComputational AcousticsAcoustic LocalizationArray ProcessingBeam SteeringBeamformingFar-field RegionsNear-field RegionsAngle Of ElevationDirection-of-arrival EstimationField LocalizationMusic AlgorithmRadar LocalizationSource LocalizationSource Localization ModelingTarget Localization
A computationally efficient algorithm is presented for 3-D near-field source localisation using a uniform circular array. Algebraic relations are demonstrated between the incident angles (elevation angle and azimuth angle) under the far-field assumption and the actual near-field location (range, elevation angle, and azimuth angle). Using these relations as paths to follow to the peak of the 3-D MUSIC spectrum, the proposed algorithm replaces the 3-D search required in the conventional 3-D MUSIC with a 1-D path-following after a 2-D initialisation, thereby reducing the computational burden.
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