Title :
A Second-Order Conjugate Augmented MUSIC Algorithm for Direction Finding
Author :
Liu, Jian ; Yu, Hongqi ; Huang, ZhiTao ; Zhou, Yiyu
Author_Institution :
Sch. of Electron. Sci., Nat. Univ. of Defense Technol., Changsha
Abstract :
A new direction finding algorithm called second-order conjugate augmented MUSIC (SO-CAM) is proposed in this paper. The basic idea of SO-CAM is to use the conjugate augmented cross-correlation to derive the pseudo-data matrix from which the pseudo covariance matrix is constructed. Then the directions of arrivals (DOAs) of the signals are estimated by MUSIC algorithm. SO-CAM can resolve two times the number of DOAs when compared to MUSIC algorithm for uniform linear array (ULA). Moreover, simulation results show that the resolution performance of SO-CAM algorithm is better than MUSIC and MUSIC-like in small sample case
Keywords :
array signal processing; correlation methods; covariance matrices; direction-of-arrival estimation; signal classification; DOA estimation; SO-CAM; ULA; cross-correlation; direction finding algorithm; directions-of-arrival; multiple signal classification; pseudocovariance matrix; pseudodata matrix; second-order conjugate augmented MUSIC; uniform linear array; CADCAM; Computer aided manufacturing; Covariance matrix; Direction of arrival estimation; Multiple signal classification; Sensor arrays; Sensor phenomena and characterization; Signal processing; Signal processing algorithms; Signal resolution; Array signal processing; MUSIC; aperture extension; direction finding;
Conference_Titel :
Radar, 2006. CIE '06. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9582-4
Electronic_ISBN :
0-7803-9583-2
DOI :
10.1109/ICR.2006.343402
