Title :
DOA estimation of coherent signals based on matrix reconstruction
Author :
Wu, Yifeng ; Cong, Yuliang ; Li, Chunhe
Author_Institution :
Coll. of Commun. Eng., Jilin Univ., Changchun, China
Abstract :
DOA estimation is an important part in the study about target precision locating. For the incoherent source signals, the conventional algorithms such as MUSIC have a good performance in processing for the estimation of the directions-of-arrival (DOA´s). But when the signals are correlated, most of the conventional algorithms for incorrelate signals will fail in the estimation of DOA´S. A novel algorithm about the estimation of DOA´s for correlated source signals is proposed in this paper. In the proposed algorithm, we reconstruct a new correlation matrix based on the original correlation matrix. The novel algorithm can accurately estimate the DOA´s of the coherent incident signals without spatial smoothing processing compared with MMUSIC algorithm. For wide coherent signals, the proposed algorithm still has a good performance compared with ISM and CSM. Simulation results are presented in Section IV and Section V to illustrate the efficiency and accuracy of this method.
Keywords :
correlation methods; direction-of-arrival estimation; matrix algebra; DOA estimation; MMUSIC algorithm; correlated source signal; correlation matrix; incoherent source signals; matrix reconstruction; target precision locating; Complexity theory; Jamming; Multiple signal classification; Signal to noise ratio; Coherent resources; Conjugate data rearrangement; Direction of Arrival (DOA); MUSIC algorithm; matrix reconstruction;
Conference_Titel :
Computer, Mechatronics, Control and Electronic Engineering (CMCE), 2010 International Conference on
Conference_Location :
Changchun
Print_ISBN :
978-1-4244-7957-3
DOI :
10.1109/CMCE.2010.5609843