Ground moving target displacement compensation in the DPCA based SAR-GMTI system

Author

Jung, Jae H. ; Jung, Jung S. ; Jung, Chul H. ; Kwag, Young K.

Author_Institution

ISR R&D Center, LIG Nex1 Co., Ltd., Gumi

fYear

2009

Firstpage

1

Lastpage

4

Abstract

The velocity and acceleration of the ground moving target can cause the target position to be displaced and defocused in the SAR image. In this paper, the displacement compensation scheme is presented to correct the displaced position and defocused moving target image in the DPCA based SAR-GMTI system. The influence of the ground moving target due to the velocity and acceleration is analyzed in range and azimuth directions, and its compensation method is presented with the simulation results. The performance of the proposed method is compared with respect to the estimated velocity and defocused quantity in both range and azimuth directions.

Keywords

radar antennas; radar imaging; synthetic aperture radar; DPCA; SAR-GMTI system; defocused moving target image; displaced phase center antenna; displacement compensation; ground moving target indicator; synthetic aperture radar; Acceleration; Aperture antennas; Argon; Azimuth; Clutter; Geometry; Land vehicles; Radar; Road vehicles; Solid modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference, 2009 IEEE

Conference_Location

Pasadena, CA

ISSN

1097-5659

Print_ISBN

978-1-4244-2870-0

Electronic_ISBN

1097-5659

Type

conf

DOI

10.1109/RADAR.2009.4977100

Filename

4977100