A geometry-based Doppler ambiguity resolver for bistatic forward-looking SAR

Author

Li, Wenchao ; Yang, Jianyu ; Huang, Yulin ; Wu, Junjie ; Kong, Lingjiang

Author_Institution

Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2010

fDate

10-14 May 2010

Firstpage

339

Lastpage

342

Abstract

Based on the analysis of the range migration characteristic of bistatic forward-looking SAR, a geometry-based Doppler ambiguity resolver is proposed in this paper. This method estimates the Doppler centroid first using edge detection and least square fitting techniques. Combined with the baseband Doppler centroid estimation method, it can more rapidly resolve the Doppler ambiguity number. Besides, it does not need the prior information of the radar platform velocity and angle. Simulation results verified the effectiveness of this method.

Keywords

edge detection; least squares approximations; radar imaging; synthetic aperture radar; Doppler ambiguity number; baseband Doppler centroid estimation; bistatic forward-looking SAR; edge detection; geometry-based Doppler ambiguity resolver; least square fitting; radar platform velocity; range migration characteristic; Baseband; Doppler radar; Flowcharts; Geometry; Image edge detection; Layout; Least squares approximation; Solid modeling; Synthetic aperture radar; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference, 2010 IEEE

Conference_Location

Washington, DC

ISSN

1097-5659

Print_ISBN

978-1-4244-5811-0

Type

conf

DOI

10.1109/RADAR.2010.5494599

Filename

5494599