Characterization and Mitigation of Radio Frequency Interference in PolSAR Data
Characterization and Mitigation of Radio Frequency Interference in PolSAR Data
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PolSAR 数据中射频干扰的表征和缓解
DOI：
10.1002/2017rs006252
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发表时间：
2017-11
期刊：
影响因子：
1.6
通讯作者：
Zhang Zijing
中科院分区：
文献类型：
--
作者：
Tao Mingliang;Zhou Feng;Zhang Zijing
极化合成孔径雷达（PolSAR）是一种重要的主动遥感手段。然而，它是常见的，发现极化SAR回波往往被污染的非相干电磁干扰，这被称为射频干扰（RFI）。现有文献对RFI信号及其对PolSAR数据影响的分析较为缺乏，尤其是对PolSAR后产品的分析，如极化分解参数和聚类结果。本文的目的是揭示RFI和极化之间的联系，以及分析干扰对PolSAR图像及其后产品的影响。从成像质量评价和散射机理解释两个方面，定性和定量分析了RFI对NASA/喷气推进实验室（JPL）无人机合成孔径雷达（UAV SAR）真实的实测数据集的不利影响。点目标响应和有效视数被评估用于评估对聚焦质量的失真。进一步讨论了超宽带射频干扰的特点，提出了一种利用沿着方位方向的非负矩阵分解的抑制方法。实验结果表明了该方法的有效性。
Polarimetric synthetic aperture radar (PolSAR) is a very important instrument for active remote sensing. However, it is common to find that PolSAR echoes are often contaminated by incoherent electromagnetic interference, which is referred to as radio frequency interference (RFI). The analysis of RFI signatures and its influence on PolSAR data seems to be lacking in existing literatures, especially for PolSAR post products, such as the polarimetric decomposition parameters and clustering result. The goal of this paper is to reveal the link between RFI and polarization, as well as to analyze the impact of interference on PolSAR image and its post products. Qualitative and quantitative analyses of the adverse impact of RFI on the real measured NASA/Jet Propulsion Laboratory (JPL) Uninhabited Aerial Vehicle Synthetic Aperture Radar data set are illustrated from two perspectives, that is, evaluation of imaging quality and interpretation of scattering mechanisms. The point target response and effective number of looks are evaluated for assessing the distortion to focusing quality. Further, we discussed the characteristics of ultra wideband RFI and proposed a mitigation method using nonnegative matrix factorization along azimuth direction. The experimental results indicate the effectiveness of the proposed method.
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DOI：
10.1117/12.2175587
发表时间：
2015-04
期刊：
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影响因子：
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作者：
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影响因子：
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DOI：
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2014-04
期刊：
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影响因子：
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通讯作者：
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影响因子：
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DOI：
10.1109/tgrs.2015.2450754
发表时间：
2016-01-01
影响因子：
8.2
作者：
Tao, Mingliang;Zhou, Feng;Zhang, Zijing
通讯作者：
Zhang, Zijing