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Combination of SAR & ISAR Techniques

Moradi, Mohammad Ali | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47405 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Nayebi, Mohammad Mehdi
  7. Abstract:
  8. The synthetic aperture radar (SAR) is a microwave imaging radar that achieves high resolution while taking advantage of pulse compression technology and the Doppler effect. In typical radar systems, in order to obtain a good azimuth resolution, one should use an antenna with big aperture. However this is not possible in many cases. SAR has overcome this problem by moving the antenna and so making a synthetic aperture. In inverse SAR (ISAR) the radar antenna is static and synthetic aperture is created by the movement of target. Typical SAR imaging aims at the static targets and when the target is moving, it does not operate well. When detecting moving targets by SAR, both radar and target are moving, so the echo of moving target not only has the component of SAR but also that of ISAR. It is a more reasonable idea to combine SAR imaging technique with ISAR imaging technique. In this work, a number of methods for combining SAR and ISAR have been introduced. Then we have compared operation of these methods under different kinds of target motion with simulation results. Keywords: Synthetic Aperture Radar (SAR), Inverse Synthetic Aperture Radar (ISAR), moving target, bi-static, hybrid algorithm, image formation
  9. Keywords:
  10. Hybrid Algorithm ; Synthetic Aperture Radar (SAR) ; Bistatic Processing ; Inverse Synthetic Aperture Radar ; Moving Target

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