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This paper presents the use of Inverse Free
Krylov Subspace Algorithm (IFKSA) with Estimation of Signal
Parameter via Rotational Invariance Technique (ESPRIT), for
Direction-of-Arrival (DOA) estimation using a Sparse Linear
Array (SLA) of antenna elements. The use of SLA reduces the
hardware requirements and the production cost. The SLA
generates the sparse data, the pure signal subspace is first
decomposed from the received corrupted signal space using
IFKSA and later, ESPRIT is used to estimate the DOAs.
Computer simulations are used to evaluate the performance
of the proposed algorithm.