Title :
A Novel Algorithm for Estimating DOA of Coherent Signals on Uniform Circular Array
Author :
Shuyan, Gao ; Hui, Chen ; Yongliang, Wang ; Cangzhen, Meng
Author_Institution :
Key Res. Lab, Wuhan Radar Acad.
Abstract :
A novel algorithm is proposed to estimate direction-of-arrival (DOA) of coherent signals on a uniform circular array (UCA), which is called MODE-TOEP algorithm. Firstly, the mode excitation method is used to transform the UCA in element space into a virtual uniform linear array (VULA) in mode space. Then a Toeplitz matrix can be reconstructed to estimate DOA of coherent signals successfully. MODE-TOEP algorithm has less computational burden due to not using spatial smoothing. Simulation results show that MODE-TOEP algorithm is effective and has a better performance compared to conventional mode spatial smoothing (MODE-SS) algorithm
Keywords :
array signal processing; direction-of-arrival estimation; DOA estimation; MODE-TOEP algorithm; Toeplitz matrix; UCA; VULA; coherent signal; direction-of-arrival; mode excitation method; uniform circular array; virtual uniform linear array; Azimuth; Computational modeling; Direction of arrival estimation; Frequency; Geometry; Multiple signal classification; Narrowband; Radar; Receiving antennas; Smoothing methods; DOA; MODE-TOEP; UCA; coherent signals;
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.2006.343384
