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http://dx.doi.org/10.5515/KJKIEES.2018.29.4.316

Two-Dimensional Entropy Minimizing Autofocusing of Millimeter-Wave (W-Band) FMCW SAR  

Park, Jaehyun (Department of Electronic Engineering, Pukyong National University)
Chun, Joohwan (Department of Electronic Engineering, KAIST)
Lee, Hyukjung (Department of Electronic Engineering, KAIST)
Song, Sungchan (Hanhwa Systems)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.29, no.4, 2018 , pp. 316-319 More about this Journal
Abstract
To detect the ground moving target, forward-looking SAR images obtained from the FMCW radar can be exploited. However, the quality of the SAR image is deteriorated due to the turbulence or fluctuation because of the flight path condition during the missile movement. We herein propose an entropy-minimizing autofocus method to compensate the motion error of forward-looking SAR. In particular, owing to the geometry of the forward-looking SAR, the motion error affects the SAR image in the two-dimensional (2D) form (azimuth and time axis). Therefore, we suggest a 2D autofocus method for the motion compensation.
Keywords
Forward Looking SAR; Autofocusing; Entropy Minimization; Motion Compensation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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2 T. Zeng, R. Wang, and F. Li, "SAR image autofocus utilizing minimum-entropy criterion," IEEE Geoscience and Remote Sensing Letters, vol. 10, no. 6, pp. 1552- 1556, 2013.   DOI
3 G. Brooker, Introduction to Sensors for Ranging and Imaging, The Institution of Engineering and Technology, 2009.