Volume 4 Issue 2
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Article Navigation >  Journal of Radars  > 2015  >  4(2): 230-239
Zhao Yu-lu, Zhang Qun-ying, Li-Chao, Ji Yi-cai, Fang Guang-you. Vibration Error Analysis and Motion Compensation of Video Synthetic Aperture Radar[J]. Journal of Radars, 2015, 4(2): 230-239. doi: 10.12000/JR14153
Citation: Zhao Yu-lu, Zhang Qun-ying, Li-Chao, Ji Yi-cai, Fang Guang-you. Vibration Error Analysis and Motion Compensation of Video Synthetic Aperture Radar[J]. Journal of Radars, 2015, 4(2): 230-239. doi: 10.12000/JR14153
shu

Vibration Error Analysis and Motion Compensation of Video Synthetic Aperture Radar

DOI: 10.12000/JR14153
  • 1.

    ( Key Laboratory of Electromagnetic Radiation and Detection Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)

  • 2.

     (Graduate University of Chinese Academy of Sciences, Beijing 100049, China)

  • Received Date: 2014-12-12
  • Rev Recd Date: 2015-01-23
  • Publish Date: 2015-04-28
    Abstract
  • Video Synthetic Aperture Radar (ViSAR) system offers high imaging frame rate, and high resolution, and it is consequently used to investigate and locate near-moving targets. Compared with microwave SAR, the practical application of ViSAR is restricted by motion compensation caused by short wavelength. Even slight platform vibrations cause significant variations in the phase of echo signal.Thus, it is imperative to analyze the motion compensation and the error of ViSAR. In this study, the results show that imaging is affected less in the direction of flight direction and by low vibration in the direction of the slant range. In contrast, high-frequency vibration in the direction of the slant range requires higher compensation accuracy. Given the particularity of ViSAR's motion compensation, a compensation scheme is designed to achieve high compensation precision .The effectiveness of the scheme is verified by ViSAR imaging simulation experiments.

     

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