Multiple Beams Spaceborne SAR Imaging

Author

Kou, Guangjie ; Wang, Zhensong ; Yao, Ping

Author_Institution

Sch. of Inf. & Electr. Eng., Ludong Univ., Yantai, China

Volume

48

Issue

4

fYear

2012

fDate

10/1/2012 12:00:00 AM

Firstpage

3363

Lastpage

3375

Abstract

High azimuth resolution and wide swath coverage pose contradicting requirements in conventional spaceborne synthetic aperture radar (SAR) systems. In order to overcome these inherent limitations, the technique of displaced phase centers multiple azimuth beams (MAB) has been proposed in recent years. The principle of MAB SAR is discussed here and then the problems related with this mode, such as the differential path error and nonuniform sampling error, are analyzed when the Earth rotation is considered. The corresponding solutions to these problems are presented.

Keywords

image sampling; radar imaging; radar resolution; spaceborne radar; synthetic aperture radar; Earth rotation; MAB SAR; SAR systems; azimuth resolution; conventional spaceborne synthetic aperture radar systems; differential path error; displaced phase centers multiple azimuth beams; multiple beams spaceborne SAR imaging; nonuniform sampling error; swath coverage pose contradicting requirements; Azimuth; Earth; Nonuniform sampling; Receivers; Space vehicles; Synthetic aperture radar; Transmitters;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/TAES.2012.6324715

Filename

6324715