TY - JOUR T1 - URV ESPRIT for tracking time-varying signals JF - Signal Processing, IEEE Transactions on Y1 - 1994 A1 - Liu,K. J.R A1 - O'Leary, Dianne P. A1 - Stewart, G.W. A1 - Wu,Y.-J.J. KW - arrival;narrowband KW - decomposition;real KW - directions KW - ESPRIT;fixed KW - estimation;real-time KW - of KW - processing;time-varying KW - signals;performance;rank-revealing KW - signals;tracking;direction-of-arrival KW - systems;time-varying KW - systems;tracking; KW - TIME KW - URV AB - ESPRIT is an algorithm for determining the fixed directions of arrival of a set of narrowband signals at an array of sensors. Unfortunately, its computational burden makes it unsuitable for real time processing of signals with time-varying directions of arrival. The authors develop a new implementation of ESPRIT that has potential for real time processing. It is based on a rank-revealing URV decomposition, rather than the eigendecomposition or singular value decomposition used in previous ESPRIT algorithms. The authors demonstrate its performance on simulated data representing both constant and time-varying signals. They find that the URV-based ESPRIT algorithm is effective for estimating time-varying directions-of-arrival at considerable computational savings over the SVD-based algorithm VL - 42 SN - 1053-587X CP - 12 M3 - 10.1109/78.340778 ER -