A New Three-Dimensional Imaging Algorithm for Airborne Forward-Looking SAR

Author

Ren, Xiaozhen ; Sun, Jiantao ; Yang, Ruliang

Author_Institution

Coll. of Inf. Sci. & Eng., Henan Univ. of Technol., Zhengzhou, China

Volume

8

Issue

1

fYear

2011

Firstpage

153

Lastpage

157

Abstract

In this letter, a new 3-D imaging algorithm is proposed for forward-looking synthetic aperture radar based on the imaging geometry and the characteristic of the echo signal. The key point of the proposed algorithm is the introduction of the nonlinear frequency modulation scaling in along-track processing to obtain accurate focusing. As the method needs only Fourier transform and multiplication operations, it is computationally efficient. Simulations with point scatterers are used to validate the method.

Keywords

Fourier transforms; airborne radar; modulation; radar imaging; synthetic aperture radar; Fourier transform; airborne forward-looking SAR; along-track processing; echo signal; imaging geometry; multiplication operations; nonlinear frequency modulation scaling; point scatterers; synthetic aperture radar; three-dimensional imaging algorithm; Azimuth; Focusing; Frequency modulation; Geometry; Imaging; Radar imaging; Radar scattering; Receiving antennas; Sun; Synthetic aperture radar; Synthetic aperture radar interferometry; Tomography; Transmitting antennas; 3-D imaging; Forward-looking; nonlinear frequency modulation scaling; synthetic aperture radar (SAR);

fLanguage

English

Journal_Title

Geoscience and Remote Sensing Letters, IEEE

Publisher

ieee

ISSN

1545-598X

Type

jour

DOI

10.1109/LGRS.2010.2055035

Filename

5535115