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Conventional SAR transmits and receives electromagnetic waves through a single antenna with a single polarization mode, which can only obtain the echo response of a certain electromagnetic characteristic, making it impossible to comprehensively describe the characteristics of a feature. In contrast, fully polarized SAR can acquire the echo scattering characteristics of the target to any electromagnetic wave at the same time and obtain a more comprehensive feature description of the ground, so it is gradually introduced into the engineering applications. In an ideal fully polarized system, we expect to get a perfect polarization scattering matrix, but during transmission and reception, the polarization crosstalk and channel imbalance often affect the process, so polarization correction is an indispensable process in the process of fully polarized SAR. Therefore, polarization correction is an indispensable process in the process of full-polarization SAR processing. The polarization correction is normalized by laying out the corner reflectors as point targets to obtain different scattering characteristics, and the angles of the corner reflectors are easy to influence the correction accuracy in the process. This paper mainly analyzes the errors caused by the placement of the corner reflectors on the correction accuracy.

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Analysis of the Effect of Point Target Placement Angle on the Accuracy of Fully Polarized SAR Polarization Correction

  • 会议论文

  • 发表日期：

    2026年

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  • Jinyi Zhang,
  • Hui Wang,
  • Sili Wu,
  • Xiang Chen,
  • Mingxi Xiao

摘要

Conventional SAR transmits and receives electromagnetic waves through a single antenna with a single polarization mode, which can only obtain the echo response of a certain electromagnetic characteristic, making it impossible to comprehensively describe the characteristics of a feature. In contrast, fully polarized SAR can acquire the echo scattering characteristics of the target to any electromagnetic wave at the same time and obtain a more comprehensive feature description of the ground, so it is gradually introduced into the engineering applications. In an ideal fully polarized system, we expect to get a perfect polarization scattering matrix, but during transmission and reception, the polarization crosstalk and channel imbalance often affect the process, so polarization correction is an indispensable process in the process of fully polarized SAR. Therefore, polarization correction is an indispensable process in the process of full-polarization SAR processing. The polarization correction is normalized by laying out the corner reflectors as point targets to obtain different scattering characteristics, and the angles of the corner reflectors are easy to influence the correction accuracy in the process. This paper mainly analyzes the errors caused by the placement of the corner reflectors on the correction accuracy.