SAR signal based motion compensation through combining PGA and 2-D map drift

Author

Zhu, Daiyin

Author_Institution

Dept. of Electron. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China

fYear

2009

fDate

26-30 Oct. 2009

Firstpage

435

Lastpage

438

Abstract

For synthetic aperture radar (SAR) operating in fine resolution mode, even with advanced motion measurement sensors, residual range cell migration (RCM) together with azimuth phase error considerably deteriorates the image quality. In this paper, a solution to SAR signal based motion compensation (SBMC) is presented, which combines the well-known techniques of phase gradient autofocus (PGA) and map drift (MD). The presented SBMC scheme employs subaperture processing, and compensates the residual RCM in the meantime of combining the subaperture phase error. Experimental results indicate the effectiveness of our approach.

Keywords

image resolution; motion compensation; radar imaging; radar resolution; synthetic aperture radar; 2D map drift; SAR signal based motion compensation; azimuth phase error; fine resolution mode; phase gradient autofocus; radar imaging; residual range cell migration; subaperture phase error; synthetic aperture radar; Azimuth; Electronics packaging; Error correction; Global Positioning System; Image resolution; Image sensors; Motion compensation; Phase estimation; Signal resolution; Synthetic aperture radar; SAR signal based motion compensation; combination of PGA and 2-D MD; subaperture phase error combination;

fLanguage

English

Publisher

ieee

Conference_Titel

Synthetic Aperture Radar, 2009. APSAR 2009. 2nd Asian-Pacific Conference on

Conference_Location

Xian, Shanxi

Print_ISBN

978-1-4244-2731-4

Electronic_ISBN

978-1-4244-2732-1

Type

conf

DOI

10.1109/APSAR.2009.5374289

Filename

5374289