An adaptive iterative scheme of Doppler centroid estimation for bistatic forward-looking SAR

Author

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

262

Lastpage

265

Abstract

For high quality synthetic aperture radar (SAR) processing, Doppler centroid estimation is an essential procedure. According to the range migration characteristic of bistatic forward-looking SAR, an adaptive iterative scheme of Doppler centroid estimation is proposed in this paper. This scheme utilizes the fact that, in the range compressed and azimuth time domain, the range migration slope of point target response is proportional to the Doppler centroid for BFSAR. It estimates Doppler centroid by searching for the range migration slope based on the minimum waveform entropy. Simulation results validate the effectiveness of this method.

Keywords

Doppler radar; iterative methods; minimum entropy methods; synthetic aperture radar; time-domain analysis; Doppler centroid estimation; adaptive iterative scheme; azimuth time domain; bistatic forward-looking SAR; minimum waveform entropy; range migration characteristics; synthetic aperture radar; Azimuth; Doppler radar; Entropy; Geometry; Layout; Radar imaging; Radar theory; 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.2010.5494613

Filename

5494613