Nonuniformly spaced array imaging

Author

Li, Hsueh-Jyh ; Huang, Gen-Tay ; Yen, Shih-Liang

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

41

Issue

3

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

278

Lastpage

286

Abstract

An image reconstruction algorithm for randomly spaced array imaging is developed. Based on the fact that the sampled bistatic Fourier space data can occupy almost the same region as that for rotating object imaging if the angular coverage is suitably defined, the range-Doppler reconstruction method developed in the rotating object imaging can be applied to the uniformly spaced circular array imaging case. When the array elements are randomly spaced, three more steps, a range alignment, a phase compensation, and an interpolation, are required to preprocess the measured signals. Experimental and numerical results have shown the effectiveness of the proposed algorithm

Keywords

array signal processing; image reconstruction; microwave antenna arrays; microwave imaging; bistatic imaging; image reconstruction algorithm; interpolation; phase compensation; randomly spaced array imaging; range alignment; range-Doppler reconstruction method; rotating object imaging; uniformly spaced circular array imaging; Antenna arrays; Aperture antennas; Cameras; Focusing; Image reconstruction; Phased arrays; Radar antennas; Scattering; Signal resolution; Space vector pulse width modulation;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.233136

Filename

233136