Performance analysis of closed-form, ESPRIT based 2-D angle estimator for rectangular arrays
Cherian P. Mathews, Martin Haardt, M.D. Zoltowski · IEEE Signal Processing Letters · 1996
The 2D DFT beamspace ESPRIT is an algorithm for use in conjunction with uniform rectangular arrays (URAs) that provides automatically paired azimuth and elevation angle estimates of incident signals via a closed-form procedure. We investigate the statistical performance of 2D DFT beamspace ESPRIT. Expressions for the 2D DFT beamspace ESPRIT estimator variances are obtained. Samples variances of the azimuth and elevation angle estimates obtained through Monte Carlo simulations are shown to be in close agreement with theoretically predicted variances.