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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Two-Dimensional Deformation Measurement Based on Multiple Aperture Interferometry in GB-SAR
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Two-Dimensional Deformation Measurement Based on Multiple Aperture Interferometry in GB-SAR

机译:GB-SAR中基于多孔径干涉法的二维变形测量

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摘要

Ground-based synthetic aperture radar (GB-SAR) technique has been widely applied for the deformation monitoring and measurement of the natural and engineered slopes. To extend the 2-D deformation measurement from the conventional 1-D measurement along the radar-target line of sight (LOS), multiple aperture interferometry (MAI) techniques based on phase differences between interferograms of the forward-looking and backward-looking subapertures are tackled in this letter. The optimal subaperture selection is analyzed considering the typical signal-to-noise ratios and correlations in GB-SAR applications. Simulations prove that the coherent integration (CIM) can be utilized to improve the measurement accuracy of the MAI method. Besides, GB-SAR experiments are carried out to validate the feasibility and effectiveness of the 2-D deformation measurement method based on MAI. Accuracy comparison of deformation measurement with the MAI and cross correlation methods is also taken. Experimental results show that the accuracy of deformation measurement along the perpendicular direction to LOS based on MAI and CIM can reach millimeter level for displaceable corner reflector.
机译:地面合成孔径雷达(GB-SAR)技术已广泛应用于自然和工程边坡的变形监测和测量。为了沿雷达目标视线(LOS)从传统的1D测量扩展2D变形测量,基于前视和后视子孔径干涉图之间的相位差的多孔径干涉法(MAI)技术在这封信中已解决。考虑到GB-SAR应用中的典型信噪比和相关性,分析了最佳子孔径选择。仿真证明,可以利用相干积分(CIM)来提高MAI方法的测量精度。此外,通过GB-SAR实验验证了基于MAI的二维变形测量方法的可行性和有效性。还进行了使用MAI和互相关方法进行变形测量的精度比较。实验结果表明,基于MAI和CIM的垂直于LOS方向的形变测量精度可以达到毫米级。

著录项

  • 来源
    《IEEE Geoscience and Remote Sensing Letters》 |2017年第2期|208-212|共5页
  • 作者单位

    Beijing Key Laboratory of Embedded Real-Time Information Processing Technology, School of Information and Electronics, Beijing Institute of Technology, Beijing, China;

    Beijing Key Laboratory of Embedded Real-Time Information Processing Technology, School of Information and Electronics, Beijing Institute of Technology, Beijing, China;

    Department of Electronics Engineering, Tsinghua University, Beijing, China;

    Beijing Key Laboratory of Embedded Real-Time Information Processing Technology, School of Information and Electronics, Beijing Institute of Technology, Beijing, China;

    Beijing Key Laboratory of Embedded Real-Time Information Processing Technology, School of Information and Electronics, Beijing Institute of Technology, Beijing, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Signal to noise ratio; Correlation; Azimuth; Geologic measurements; Apertures; Phase measurement; Synthetic aperture radar;

    机译:信噪比相关度方位角地质测量孔径相位测量合成孔径雷达;

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