Volume 9 Issue 2
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ZHANG Tianxian and XIA Xiang-Gen. An overview of OFDM SAR imaging methods[J]. Journal of Radars, 2020, 9(2): 243–258. doi: 10.12000/JR19116
Citation: ZHANG Tianxian and XIA Xiang-Gen. An overview of OFDM SAR imaging methods[J]. Journal of Radars, 2020, 9(2): 243–258. doi: 10.12000/JR19116
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An Overview of OFDM SAR Imaging Methods

DOI: 10.12000/JR19116
  • 1.

    School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China

  • 2.

    Department of Electrical and Computer Engineering, University of Delaware, Newark DE 19716, USA

Funds:  The National Natural Science Foundation of China (61971109), The Fundamental Research Funds for the Central Universities (2672018ZYGX2018J009)
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  • Corresponding author: ZHANG Tianxian, txzhang@uestc.edu.cn; XIA Xiang-Gen, xxia@ee.udel.edu
  • Received Date: 2019-12-22
  • Rev Recd Date: 2020-04-22
    • Available Online: 2020-05-08
  • Publish Date: 2020-04-01
    Abstract
  • In recent years, Orthogonal Frequency Division Multiplexing (OFDM) signal has been widely used in Synthetic Aperture Radar (SAR) imaging research due to its orthogonality and large bandwidth. Compared with the traditional SAR, OFDM SAR has certain advantages in imaging applications because of its unique signal characteristics. Nevertheless, OFDM SAR faces many challenges. In this paper, on the basis of different antenna configurations, the problems and studies of single-antenna OFDM SAR imaging and multi-antenna MIMO OFDM SAR imaging are reviewed. The imaging methods of SAR/MIMO SAR based on OFDM and cyclic prefix OFDM signals are discussed, and some possible future research directions of OFDM SAR are presented.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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