Title :
A modified virtual array ESPRIT algorithm based on real signal subspace
Author :
Liu Ning ; Shi Haoshan ; Liu Liping ; Yang Bo
Author_Institution :
Sci. & Technol. on UAV Lab., Northwestern Polytech. Univ., Xi´an, China
Abstract :
A new ESPRIT method based on virtual array in the presence of coherent signals is presented. Using the received dates and its conjugate information, we reconstructed array data matrix. To reduce the complexity of algorithm, a real signal subspace can be obtained by a unitary transformation. Using the modified U-VC-ESPRIT which has small amount of calculation, we estimated DOA of non-circular coherent signal with arbitrary phase without array aperture reduction and effective element loss. The simulation results verified the effectiveness and superiority of the algorithm.
Keywords :
array signal processing; covariance matrices; direction-of-arrival estimation; DOA estimation; ESPRIT method; array data matrix reconstruction; conjugate information; modified U-VC-ESPRIT; noncircular coherent signal; real signal subspace; received dates; unitary transformation; virtual array; Covariance matrices; Direction-of-arrival estimation; Estimation; Sensor arrays; Signal to noise ratio; DOA; Unitary ESPRIT; Virtual Array; coherent signals;
Conference_Titel :
Antennas and Propagation (ISAP), 2014 International Symposium on
Conference_Location :
Kaohsiung
DOI :
10.1109/ISANP.2014.7026536
