TY - JOUR
T1 - Fast method for DOA estimation with circular and noncircular signals mixed together
AU - Zeng, Yaoping
AU - Yang, Yixin
AU - Lu, Guangyue
AU - Huang, Qiongdan
N1 - Publisher Copyright:
© 2014 Yaoping Zeng et al.
PY - 2014/10/1
Y1 - 2014/10/1
N2 - Most of the existing algorithms to estimate the direction of arrival (DOA) of signals deal with the situation that all signals are circular. However, it is quite often in practical engineering that circular and noncircular signals appear in the same time. To effectively detect DOA of signals in such circumstances, we propose a novel algorithm. Firstly, using received data and its conjugate, we can detect more signals because of the doubled array aperture. Secondly, through unitary transform and multistage Wiener filter (MSWF) technology, we can obtain the noise subspace of array without performing eigendecomposition. Finally, by employing the improved MUSIC algorithm,we can acquire the DOA of the mixed circular and noncircular signals through two-stage search. Simulation results clearly demonstrate the effectiveness of the proposed algorithm.
AB - Most of the existing algorithms to estimate the direction of arrival (DOA) of signals deal with the situation that all signals are circular. However, it is quite often in practical engineering that circular and noncircular signals appear in the same time. To effectively detect DOA of signals in such circumstances, we propose a novel algorithm. Firstly, using received data and its conjugate, we can detect more signals because of the doubled array aperture. Secondly, through unitary transform and multistage Wiener filter (MSWF) technology, we can obtain the noise subspace of array without performing eigendecomposition. Finally, by employing the improved MUSIC algorithm,we can acquire the DOA of the mixed circular and noncircular signals through two-stage search. Simulation results clearly demonstrate the effectiveness of the proposed algorithm.
UR - http://www.scopus.com/inward/record.url?scp=84911924925&partnerID=8YFLogxK
U2 - 10.1155/2014/206146
DO - 10.1155/2014/206146
M3 - 文章
AN - SCOPUS:84911924925
SN - 2090-0147
VL - 2014
JO - Journal of Electrical and Computer Engineering
JF - Journal of Electrical and Computer Engineering
M1 - 206146
ER -