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Map of Faraday rotation angle in Advanced Land Observing Satellite-2 full polarimetric data

机译:高级土地观测卫星-2全极偏光数据的法拉第旋转角度地图

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摘要

Spaceborne synthetic aperture radar (SAR) systems operating at low frequency, such as L- and P-bands, are significantly influenced by ionospheric effects. One of the remarkable effects is Faraday rotation (FR), which is known as a serious error source for the polarimetric SAR (PolSAR) application. The FR effect mainly results from the background ionosphere so that the FR angles (FRAs) within a SAR image tend to take on a potential spatial-variable distribution. The typical estimator is used to accurately estimate FRA from the PolSAR data. Moreover, a step-to-step procedure is proposed to derive FRA map. On the basis of the real data processing, the experimental results validate the effectiveness of the FRA map, which indicates the immense capability of the PolSAR data to retrieve a spatial distribution of the FRA.
机译:在低频(如L-和P频段)下操作的星载合成孔径雷达(SAR)系统受电离层效应的显着影响。一个显着的效果之一是法拉第旋转(FR),称为偏振SAR(POLSAR)应用的严重误差源。 FR效应主要由背景电离层产生,使得SAR图像内的FR角(FRAS)倾向于采用潜在的空间可变分布。典型的估计器用于准确地从POLSAR数据估计FRA。此外,提出了逐步步骤来派生FRA图。在真实数据处理的基础上,实验结果验证了FRA图的有效性,这表明POLSAR数据的巨大能力检索FRA的空间分布。

著录项

  • 来源
    《The Journal of Engineering》 |2019年第20期|6668-6670|共3页
  • 作者单位

    NUDT Inst Space Elect & Informat Technol Changsha 410073 Hunan Peoples R China;

    NUDT Inst Space Elect & Informat Technol Changsha 410073 Hunan Peoples R China;

    NUDT Inst Space Elect & Informat Technol Changsha 410073 Hunan Peoples R China;

    NUDT Inst Space Elect & Informat Technol Changsha 410073 Hunan Peoples R China;

    NUDT Inst Space Elect & Informat Technol Changsha 410073 Hunan Peoples R China;

    China Elect Technol Grp Corp Inst 38 Hefei 230031 Anhui Peoples R China;

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  • 正文语种 eng
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