Title :
Simulation of dual-channel SAR-GMTI for velocity estimation and compensation
Author :
Kwag, Young K. ; Jung, Jae H. ; Jung, Chul H.
Author_Institution :
Dept. of Avionics, Korea Aerosp. Univ., Koyang, South Korea
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 :
geophysical techniques; synthetic aperture radar; SAR image; SAR-GMTI system; azimuth directions; compensation method; defocused quantity; displaced position; displacement compensation scheme; dual-channel SAR-GMTI; ground moving target; target position; velocity estimation; Acceleration; Airborne radar; Aperture antennas; Azimuth; Clutter; Directive antennas; Geometry; Land vehicles; Road vehicles; Synthetic aperture radar; DPCA; Dual channel SAR; SAR-GMTI;
Conference_Titel :
Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009
Conference_Location :
Cape Town
Print_ISBN :
978-1-4244-3394-0
Electronic_ISBN :
978-1-4244-3395-7
DOI :
10.1109/IGARSS.2009.5417435
