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.

fYear

2006

fDate

16-19 Oct. 2006

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar, 2006. CIE '06. International Conference on

Conference_Location

Shanghai

Print_ISBN

0-7803-9582-4

Electronic_ISBN

0-7803-9583-2

Type

conf

DOI

10.1109/ICR.2006.343384

Filename

4148586