DOA using uniform/nonuniform linear and uniform circular antenna arrays with Bayesian compressive sensing

Directions of Arrival (DOA) estimation of coherent or incoherent signals impinging on uniformly or non-uniformly spaced linear or uniformly spaced circular antenna arrays are investigated in this paper. DOA is accomplished by using Bayesian compressive sensing reconstruction method. This approach eliminates the need for spatial smoothing and/or array interpolation that are often used when dealing with correlated arrivals and when using non-uniformly spaced antenna arrays or circular arrays. Simulations show that reliable DOA estimates are attainable at signal-to-noise ratios above 5 dB.