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

Volume

4

fYear

2009

fDate

12-17 July 2009

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IGARSS.2009.5417435

Filename

5417435