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http://dx.doi.org/10.5515/KJKIEES.2009.20.11.1138

Ground Moving Target Displacement Compensation and Performance Analysis in the DPCA Based SAR-GMTI System  

Jung, Jae-Hoon (ISR Research Center, LIG Nex1 Co., Ltd.)
Jung, Jung-Soo (Department of Avionics Engineering, Korea Aerospace University)
Jung, Chul-Ho (Department of Avionics Engineering, Korea Aerospace University)
Kwag, Young-Kil (Department of Avionics Engineering, Korea Aerospace University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.20, no.11, 2009 , pp. 1138-1144 More about this Journal
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
DPCA; Air-Borne SAR; GMTI; Compensation;
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