The Effect of Inertial Measurement Unit on Synthetic Aperture Radar Image Quality

DOI
  • Lee Soojeong
    Department of Mechanical & Aerospace Engineering Automation and Systems Research Institute, Seoul National University
  • Park Yong-gonjong
    Department of Mechanical & Aerospace Engineering Automation and Systems Research Institute, Seoul National University
  • Jung Park Woo
    Department of Mechanical & Aerospace Engineering Automation and Systems Research Institute, Seoul National University
  • Gook Park Chan
    Department of Mechanical & Aerospace Engineering Automation and Systems Research Institute, Seoul National University
  • Song Jong-Hwa
    Hanwha Systems
  • Bae Chang-Sik
    Hanwha Systems

Description

This paper analyzes the effect of inertial measurement unit (IMU) on synthetic aperture radar (SAR) image quality. While operating SAR, it is supposed that an aircraft flies straight and level at a constant speed. Because of atmospheric turbulence and aircraft maneuvers, it deviates from its nominal trajectory. With navigation solutions, the deviations can be compensated through motion compensation procedure. However, uncompensated motion errors generated by IMU errors degrade SAR image quality, such as broadening bandwidth and blurring the image. Since the residual errors depend on the degree of IMU inaccuracies, SAR images and impulse response function (IRF) according to IMU grades are compared with each other. Through this result, the IMU specification is suggested to satisfy given SAR image quality.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390282763100723968
  • DOI
    10.5954/icarob.2019.os3-4
  • ISSN
    21887829
  • Text Lang
    en
  • Data Source
    • JaLC
    • Crossref
  • Abstract License Flag
    Disallowed

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