Title :
A hybrid array calibration method
Author :
Wang, Yan ; Xu, ShanJia ; Yu, Xiao-Hu
Author_Institution :
NMCL, Southeast Univ., Nanjing, China
Abstract :
An unbiased hybrid calibration algorithm (HCM) is proposed; it uses a deterministic maximum-likelihood method to estimate the self-calibration signal and any interference, and to overcome the non-unique solutions of auto-calibration methods for linear arrays and the low calibration accuracy of internal calibration methods (ICM) under interference. The Cramer-Rao bound (CRB) is reached by the proposed algorithm.
Keywords :
array signal processing; calibration; interference (signal); maximum likelihood estimation; Cramer-Rao bound; calibration accuracy; deterministic maximum-likelihood method; hybrid array calibration method; internal calibration methods; linear arrays; nonunique solutions; self-calibration signal estimation; unbiased hybrid calibration algorithm; Calibration; Data models; Direction of arrival estimation; Integrated circuit noise; Interference; Linear antenna arrays; Maximum likelihood estimation; Mutual coupling; RF signals; Radio frequency;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1551941
