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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >3-D SAR Tomography: The Multibaseline Sector Interpolation Approach
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3-D SAR Tomography: The Multibaseline Sector Interpolation Approach

机译:3-D SAR层析成像:多基线扇区插值方法

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摘要

Multibaseline (MB) synthetic aperture radar (SAR) tomography is a promising mode of SAR interferometry, allowing full 3-D imaging of volumetric and layover scatterers in place of a single elevation estimation capability for each SAR cell However, Fourier-based MB SAR tomography is generally affected by unsatisfactory imaging quality due to a typically low number of baselines with irregular distribution. In this paper, we improve the basic elevation focusing technique by reconstructing a set of uniform baselines data exploiting in the interpolation step the ancillary information about the extension of a height sector which contains all the scatterers. This a priori information can be derived from the knowledge of the kind of the observed scenario (e.g., forest or urban). To demonstrate the concept, an imaging enhancement analysis is carried out by simulation.
机译:多基线(MB)合成孔径雷达(SAR)层析成像是SAR干涉术的一种有前途的模式,允许对体积和停留散射体进行完整的3D成像,代替了每个SAR单元的单个高程估计功能。但是,基于傅立叶的MB SAR层析成像通常由于基线数量较少且分布不规则,通常会受到成像质量不佳的影响。在本文中,我们通过重建一组统一的基线数据来改进基本的高程聚焦技术,该数据在插值步骤中利用了有关包含所有散射体的高度扇区扩展的辅助信息。该先验信息可以从所观察到的场景的种类(例如,森林或城市)的知识中得出。为了演示该概念,通过仿真进行了成像增强分析。

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