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首页> 外文期刊>Geoscience and Remote Sensing, IEEE Transactions on >Three-Dimensional Imaging and Scattering Mechanism Estimation Over Urban Scenes Using Dual-Baseline Polarimetric InSAR Observations at L-Band
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Three-Dimensional Imaging and Scattering Mechanism Estimation Over Urban Scenes Using Dual-Baseline Polarimetric InSAR Observations at L-Band

机译：L波段双基线极化InSAR观测值在城市场景中的三维成像和散射机制估计

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摘要

This paper introduces new polarimetric algorithms for generating 3-D images and estimating scattering mechanisms from polarimetric multibaseline (MB) interferometric synthetic aperture radar (SAR) measurements. First, an MB interferometric SAR signal model is generalized to the fully polarimetric configuration, establishing the notion of polarimetric reflectivity. Subsequently, polarimetric beamforming, Capon, and MUSIC methods that determine optimal polarization combinations for height estimation are developed. These new techniques allow for extracting the height of reflectors, the associated scattering mechanisms, and the polarimetric (pseudo)reflectivities. By means of polarimetric dual-baseline interferometric SAR observations of an urban environment, the performance of the conceived algorithms is examined in detail. Producing 3-D images of a building layover, the quality of the approaches is compared in terms of refined resolution and lowered side lobes. Furthermore, the scattering processes occurring in urban scenes are investigated thoroughly by analyzing the optimal reflection types. The algorithms are validated using dual-baseline polarimetric SAR interferometric data at L-band acquired by German Aerospace Center's experimental SAR system over Dresden city.
机译：本文介绍了用于生成3-D图像并根据偏振多基线（MB）干涉合成孔径雷达（SAR）测量来估计散射机制的新偏振算法。首先，将MB干涉SAR信号模型推广到全极化配置，建立极化反射率的概念。随后，开发了确定高度估计的最佳偏振组合的偏振波束形成，Capon和MUSIC方法。这些新技术可以提取反射器的高度，相关的散射机制以及极化（伪）反射率。通过对城市环境的极化双基线干涉SAR观测，详细研究了所构想算法的性能。生成建筑物中空的3D图像，比较方法的质量，包括改进的分辨率和降低的旁瓣。此外，通过分析最佳反射类型，彻底研究了城市场景中发生的散射过程。该算法使用德国航天中心实验性SAR系统在德累斯顿市获得的L波段双基线极化SAR干涉数据进行了验证。

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