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- Title
ISAR 영상 형성을 위한 회전운동보상 기법 연구.
- Authors
강병수; 배지훈; 정성은; 김찬홍; 김경태
- Abstract
In this paper, we propose a inverse synthetic aperture radar(ISAR) rotational motion compensation(RMC) method to remove residual blurring caused by non-uniform rotational motion of a target. First, a range bin having an isolated scatterer is selected. Next, polynomial phase signal in the selected range bin is estimated by using both Fourier transform(FT) and polynomial-phase transform(PPT). Finally, a new slow time variable that uniformly samples radar signal along the aspect angle directions is defined by using the estimated phase signal, and we interpolate radar signal in terms of the new time variable. As a result, rotational motion to blurr ISAR images is removed, and focused ISAR images are obtained. Simulation results using battleship model validate the robustness and effectiveness of our proposed RMC method.
- Subjects
IMAGE quality in synthetic aperture radar; ROTATIONAL motion
- Publication
Journal of Korean Institute of Electromagnetic Engineering & Science / Han-Guk Jeonjapa Hakoe Nonmunji, 2016, Vol 27, Issue 1, p69
- ISSN
1226-3133
- Publication type
Article
- DOI
10.5515/KJKIEES.2016.27.1.69