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XING Mengdao, MA Penghui, LOU Yishan, et al. Review of fast back projection algorithms in synthetic aperture radar[J]. Journal of Radars, 2024, 13(1): 1–22. doi: 10.12000/JR23183
Citation: XING Mengdao, MA Penghui, LOU Yishan, et al. Review of fast back projection algorithms in synthetic aperture radar[J]. Journal of Radars, 2024, 13(1): 1–22. doi: 10.12000/JR23183
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Review of Fast Back Projection Algorithms in Synthetic Aperture Radar

DOI: 10.12000/JR23183
  • 1.

    National Key Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

  • 2.

    Academy of Advanced Interdisciplinary Research, XidianUniversity, Xi’an 710071, China

Funds:  The National Natural Science Fundation of China (62271375), The Fundamental Research Funds for the Central Universities (20199234731), The stabilization support of National Radar Signal Processing Laboratory (KGJ202201)
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  • Corresponding author: XING Mengdao, xmd@xidian.edu.cn
  • Received Date: 2023-10-04
  • Rev Recd Date: 2023-12-15
    • Available Online: 2023-12-20
  • Publish Date: 2024-01-05
    Abstract
  • The Back Projection (BP) algorithm is an important direction in the development of synthetic aperture radar imaging algorithms. However, the large computational load of the BP algorithm has hindered its development in engineering applications. Therefore, techniques to enhance the computational efficiency of the BP algorithm have recently received widespread attention. This paper discusses the fast BP algorithm based on various imaging plane coordinate systems, including the distance-azimuth plane coordinate system, the ground plane coordinate system, and the non-Euclidean coordinate system. First, the principle of the original BP algorithm and the impact of different coordinate systems on accelerating the BP algorithm are introduced, and the development history of the BP algorithm is sorted out. Then, the research progress of the fast BP algorithm based on different imaging plane coordinate systems is examined, focusing on the recent research work completed by the author’s research team. Finally, the application of fast BP algorithm in engineering is introduced, and the research development trend of the fast BP imaging algorithm is discussed.

     

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