EM-ESPRIT ALGORITHM FOR DIRECTION FINDING WITH NONUNIFORM ARRAYS

Carine El Kassis (1) , José Picheral (1) , Chafik Mokbel (2)

1 SUPELEC-Campus Gif
2 UOB - University of Balamand [Liban]

This paper deals with the problem of the Direction Of Arrival (DOA) estimation with nonuniform linear arrays. The proposed method is a combination of the Expectation Maximization (EM) and the ESPRIT methods. The EM algorithm interpolates the nonuniform array to an equivalent uniform array, and then, the application of ESPRIT is possible, in order to estimate the DOA. One of this method novelties lies in its capacity of dealing with any nonuniform array geometry. This technique manifests significant performance and computational advantages over previous algorithms such as MUSIC, specially in the preasymptotic domain, and the comparison with the theoretical Cramer-Rao Bounds (CRB) shows its efficiency.

Keywords: ESPRIT; Antenna arrays; nonuniformly spaced arrays; direction of arrival estimation; EM algorithm; ESPRIT.

Domains: Computer Science [cs]; Signal and Image Processing; Engineering Sciences [physics]; Signal and Image processing

Carine El Kassis, José Picheral, Chafik Mokbel. EM-ESPRIT ALGORITHM FOR DIRECTION FINDING WITH NONUNIFORM ARRAYS. Statistical Signal Processing Workshop, Aug 2007, Madison, United States. pp.453-457, ⟨10.1109/SSP.2007.4301299⟩. ⟨hal-00258484⟩