Three-Dimensional ISAR Imaging Using a Two-Dimensional Sparse Antenna Array

Author

Ma, Changzheng ; Yeo, Tat Soon ; Tan, Hwee Siang ; Wang, Jun ; Chen, Baixiao

Author_Institution

Sch. of Electr. & Inf. Eng., Zhongyuan Univ. of Technol., Zhengzhou

Volume

5

Issue

3

fYear

2008

fDate

7/1/2008 12:00:00 AM

Firstpage

378

Lastpage

382

Abstract

Conventional antenna array 3-D inverse synthetic aperture radar (ISAR) imaging method does imaging by first carrying out ISAR imaging for all the different antennas and then using array direction of arrival (DOA) estimation on every scatterer to get the position of that scatterer. The aperture formed by the target´s motion is used to separate the scatterers, and the antenna array aperture is used for position measurement. In this letter, a 3-D imaging method based on a combination of sparse array beamforming and ISAR imaging is proposed, where 3-D images are formed by space-time match filtering. The estimation of the target´s rotation parameters is also given. Simulation results have shown the effectiveness of the proposed methods.

Keywords

antenna arrays; radar antennas; radar imaging; space-time adaptive processing; synthetic aperture radar; 2D sparse antenna array; 3D ISAR imaging; 3D inverse synthetic aperture radar; antenna array aperture; space-time match filtering; sparse array beamforming; target rotation parameters; 3-D imaging; Antenna array; inverse synthetic aperture radar (ISAR);

fLanguage

English

Journal_Title

Geoscience and Remote Sensing Letters, IEEE

Publisher

ieee

ISSN

1545-598X

Type

jour

DOI

10.1109/LGRS.2008.916071

Filename

4510664