Title :
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
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;
Conference_Titel :
Radar Conference, 2009 IEEE
Conference_Location :
Pasadena, CA
Print_ISBN :
978-1-4244-2870-0
Electronic_ISBN :
1097-5659
DOI :
10.1109/RADAR.2009.4977100
