Joint angle and frequency estimation using structured least squares
Cheng Qian, Lei Huang, Yunmei Shi, Hing Cheung So · 2014
A structured least squares based ESPRIT method is devised for joint direction-of-arrival and frequency estimation. By considering the errors in the estimated signal subspace and employing an iterative minimization procedure, the proposed approach is able to efficiently refine the estimated signal subspace, leading to significant enhancement in estimation performance. Simulation results demonstrate the effectiveness of the proposed approach.