A space-time equivalence analysis and application of array signal processing based on circular arrays

Author

Zhengdong Du ; Ping Wei

Author_Institution

Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China., Chengdu, China

fYear

2013

fDate

23-25 July 2013

Firstpage

1268

Lastpage

1272

Abstract

Uniform linear array is commonly used to explain the space-time equivalence in array signal processing. In this paper, through the analysis of sampling sequence in circular array, the sequence is equivalent to a time-domain sequence whose frequency is changing over time. The spectral bandwidth of this sequence is determined by the array aperture. Besides, this paper presents a new method of transforming circular array into virtual linear array, and with multi-rate signal processing principles, the paper analyzes the requirements of number of array elements in circular array of conventional beam forming.

Keywords

array signal processing; linear antenna arrays; signal sampling; space-time adaptive processing; time-domain analysis; array aperture; array elements; array signal processing; beam forming; multirate signal processing principles; sampling sequence; space-time equivalence; spectral bandwidth; time-domain sequence; transforming circular array; uniform linear array; virtual linear array; Antenna arrays; Apertures; Arrays; Bandwidth; Frequency modulation; Time-frequency analysis; circular array; decimation; space-time equivalence; spatial spectrum;

fLanguage

English

Publisher

ieee

Conference_Titel

Natural Computation (ICNC), 2013 Ninth International Conference on

Conference_Location

Shenyang

Type

conf

DOI

10.1109/ICNC.2013.6818173

Filename

6818173