Title :
Estimation of azimuth-elevation on non-ideal UCA
Author :
Tao, Jianwu ; Shi, Yaowu ; Chang, Wenxiu
Author_Institution :
Commun. Coll., Jilin Univ., Changchun, China
Abstract :
In presence of general array error in a uniform circular arrays (UCAs), estimation of azimuth and elevation for a source is proposed. Based on array manifold in UCAs, the spatial frequency that is related to DOA is gained and theoretical expression for its asymptotic variance and the Cramer-Rao bound (CRB) of estimation is derived. The ambiguous problem is analyzed. The azimuth and elevation of source are estimated by weighted total least squares. The results of simulation show that the performance of the estimation is close to the CRB.
Keywords :
array signal processing; direction-of-arrival estimation; error analysis; least squares approximations; CRB; Cramer-Rao bound; DOA; asymptotic variance; azimuth-elevation estimation; direction-of-arrival; nonideal UCA; spatial frequency; uniform circular array; weighted total least squares; Additive noise; Azimuth; Covariance matrix; Direction of arrival estimation; Educational institutions; Frequency estimation; Least squares approximation; Phased arrays; Sensor arrays; Wavelength measurement;
Conference_Titel :
Sensor Array and Multichannel Signal Processing Workshop Proceedings, 2004
Print_ISBN :
0-7803-8545-4
DOI :
10.1109/SAM.2004.1503015
