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A Study on the Rotational Motion Compensation Method for ISAR Imaging
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 Title & Authors
A Study on the Rotational Motion Compensation Method for ISAR Imaging
Kang, Byung-Soo; Bae, Ji-Hoon; Chung, Sung-Eun; Kim, Chan-Hong; Kim, Kyung-Tae;
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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.
Inverse Synthetic Aperture Radar(ISAR) Image;Rotational Motion Compensation(RMC);
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시간-주파수 영상을 이용한 효과적인 미사일 미세운동 변수 추출 방법,최인오;김시호;정주호;김경태;박상홍;

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