A Unitary Method For The ESPRIT Direction-Of-Arrival Estimation Algorithm
Charles F. Van Loan · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1988
ESPRIT is an interesting new method for solving the Direction-of-Arrival estimation problem. It involves some rather tricky matrix manipulations. We show how these calculations can be carried out using only unitary transformations of the data. No inverses or cross-products are required making the new method extremely robust.