AOA Estimation

DOA EstimationIntroduction

M-Element Array With Arriving Signal

Array Output :

WhereM M array correlation matrix

DOA TechniquesConventional TechniquesSubspace Based TechniquesMaximum Likelihood TechniquesIntegrated Techniques

Conventional TechniquesBartlett MethodCapon MethodBartlett MethodIf the array is uniformly weighted, we can define the Bartlett AOA estimate as

Outcome

Capon MethodThe goal is to maximize the signal-to-intereference ratio (SIR) while passing the signal of interest undistorted in phase and amplitude.The array weights are given by:

For Capon method pseudospectrum is given by :

Outcome

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