Circular array phase modes supergain beamforming for arbitrary beampattern synthesis

Author

YuKang Liu

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Kentucky, Lexington, KY, USA

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

4

Abstract

Circular arrays are widely used in underwater acoustics array signal processing. In this paper a generalized method is proposed to synthesis beampattern for circular array phase modes beamforming and calculate superdirective mode coefficients numerically. For an arbitrary beampattern, we propose to calculate the mode space superdirective mode coefficients based on generalized inverse matrix. Computer simulation is held for 12-elements circular array with open sphere baffle. It is found that the proposed method is able to synthesis the Maximum Signal to Noise Ratio (SNR) superdirective beampattern for large frequency range. This approach can be utilized to synthesis arbitrary beampattern, indicating its wide range of application in superdirectivity beamforming.

Keywords

array signal processing; matrix algebra; underwater acoustic communication; 12-elements circular array; arbitrary beampattern synthesis; circular array phase modes; generalized inverse matrix; maximum signal to noise ratio superdirective beampattern; underwater acoustics array signal processing; Array signal processing; Arrays; Computer simulation; Equations; Robustness; Signal to noise ratio; System-on-chip; Superdirectivity; beamforming; circular array; generalized inverse matrix; phase modes;

fLanguage

English

Publisher

ieee

Conference_Titel

Oceans - St. John's, 2014

Conference_Location

St. John´s, NL

Print_ISBN

978-1-4799-4920-5

Type

conf

DOI

10.1109/OCEANS.2014.7002980

Filename

7002980