Title :
2-D DOA Estimation for Uniform Circular Arrays with PM
Author :
Lian, Xiaohua ; Zhou, Jianjiang
Author_Institution :
Dept. of Electr. & Electron. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing
Abstract :
This paper introduces the propagator method (PM) to 2-D direction of arrival (DOA) estimation for uniform circular arrays (UCA). Two kinds of PM are presented, PM-ESPRIT and PM-MUSIC. Both operate in beamspace and require no eigen-decomposition calculation, therefore reduce the computational load significantly. PM-ESPRIT, which has natural pair matching structure, can provide accurate searching starts for PM-MUSIC, after introducing a new random process with zero mean. PM-MUSIC, based on real-valued beamspace manifold, achieves high resolution in 2-D DOA estimation for incoherent signal sources and has a better performance in dealing with the highly coherent sources than UCA-RB-MUSIC.
Keywords :
array signal processing; direction-of-arrival estimation; random processes; signal classification; signal resolution; 2-D DOA estimation; PM-ESPRIT; PM-MUSIC; direction of arrival estimation; incoherent signal sources; natural pair matching structure; propagator method; random process; real-valued beamspace manifold; signal resolution; uniform circular arrays; Computational complexity; Computational modeling; Direction of arrival estimation; Multiple signal classification; Narrowband; Random processes; Signal resolution; Smoothing methods; Transmission line matrix methods; White noise;
Conference_Titel :
Antennas, Propagation & EM Theory, 2006. ISAPE '06. 7th International Symposium on
Conference_Location :
Guilin
Print_ISBN :
1-4244-0162-3
Electronic_ISBN :
1-4244-0163-1
DOI :
10.1109/ISAPE.2006.353449
