Resolution analysis for wide angle SAR imaging

Author

Sisan, He ; Jianxiong, Zhou ; Hongzhong, Zhao ; Qiang, Fu

Author_Institution

NUDT, Changsha

fYear

2007

fDate

5-9 Nov. 2007

Firstpage

19

Lastpage

22

Abstract

This paper analyzes resolution for synthetic aperture radar data spanning a wide angular aperture. Traditional SAR imaging resolution analysis is based on the assumption of rectangular or near-rectangular support region, which fails in the wide angle SAR imaging case. Based on the point spread function of two-dimension radar imaging system, we deduce formulas to calculate the -4dB mainlobe resolutions for cross-range and range by approximations. Simulation results demonstrate that the formulas fit well with the numerically calculated value, whether the synthesized aperture is wide or narrow.

Keywords

radar imaging; synthetic aperture radar; point spread function; resolution analysis; synthetic aperture radar data spanning; two-dimension radar imaging system; wide angle SAR imaging; wide angular aperture; Failure analysis; Geometry; Helium; Image analysis; Image resolution; Radar imaging; Radar polarimetry; Signal resolution; Synthetic aperture radar; Unmanned aerial vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

Synthetic Aperture Radar, 2007. APSAR 2007. 1st Asian and Pacific Conference on

Conference_Location

Huangshan

Print_ISBN

978-1-4244-1188-7

Electronic_ISBN

978-1-4244-1188-7

Type

conf

DOI

10.1109/APSAR.2007.4418545

Filename

4418545