A modified method of frequency and 2-D angle estimation

Author

Chen Hui ; Wang Yongliang

Author_Institution

Key Res. Lab, Wuhan Radar Acad., China

Volume

3

fYear

2003

fDate

22-27 June 2003

Firstpage

920

Abstract

A modified method based on uniform circular array for wide frequency band is presented in this paper in order to estimate parameters of signal frequency, azimuth angle and elevation angle. In the method a new matrix, which is called cumulants-based mixed DOA matrix, is formed by the special structure of uniform circular array. Under the condition of sub-nyquist spatio-temporal sampling, we can estimate no ambiguous frequency, and then we can get no ambiguous 2-D angles by general eigen-decomposed of mixed DOA matrix pencil. The modified method can realize the azimuth and elevation angle that are automatically paired with frequency.

Keywords

Nyquist diagrams; antenna arrays; array signal processing; direction-of-arrival estimation; frequency estimation; higher order statistics; matrix decomposition; 2-D angle estimation; azimuth angle; cumulants-based mixed DOA matrix; elevation angle; frequency estimation; modified method; rotational invariance matrix; sub-Nyquist spatiotemporal sampling; uniform circular array; wide frequency band; Azimuth; Direction of arrival estimation; Frequency estimation; Mutual coupling; Narrowband; Parameter estimation; Radar; Sampling methods; Spatial resolution; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2003. IEEE

Conference_Location

Columbus, OH, USA

Print_ISBN

0-7803-7846-6

Type

conf

DOI

10.1109/APS.2003.1220060

Filename

1220060