Fast DOA estimation with ULA in the presence of sensor gain and phase errors

When array errors such as sensors´ gain and phase uncertain existing, high-resolution DOA estimation methods performance degrades significantly. In this paper, A simple and fast calibration algorithm that does not require any priori knowledge of the DOA of signal with sensor gain and phase uncertainties is presented The sensors´ gain and phase errors can be respectively corrected by repairing the covariance matrix with Toeplize characteristic. Computer simulation results illustrate the good performance of the proposed algorithm.