Title :
Fast DOA estimation with ULA in the presence of sensor gain and phase errors
Author :
Wang, Tiedan ; Liao, Hongshu ; Li, Liping ; Tang, Xu
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. China, Chengdu, China
Abstract :
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.
Keywords :
Toeplitz matrices; array signal processing; calibration; covariance matrices; direction-of-arrival estimation; phase estimation; DOA estimation; Toeplize matrix; ULA array error; calibration algorithm; covariance matrix; direction-of-arrival estimation; sensor array signal processing; sensor gain error estimation; sensor phase error estimation; sensor phase uncertainity; sensor phase uncertaintiy; uniform linear array; Calibration; Computer errors; Degradation; Direction of arrival estimation; Performance gain; Phase estimation; Phased arrays; Sensor arrays; Sensor phenomena and characterization; Uncertainty;
Conference_Titel :
Communications, Circuits and Systems, 2009. ICCCAS 2009. International Conference on
Conference_Location :
Milpitas, CA
Print_ISBN :
978-1-4244-4886-9
Electronic_ISBN :
978-1-4244-4888-3
DOI :
10.1109/ICCCAS.2009.5250501