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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Foliage attenuation and backscatter analysis of SAR imagery
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Foliage attenuation and backscatter analysis of SAR imagery

机译：SAR图像的叶面衰减和反向散射分析

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摘要

The ability of a synthetic aperture radar (SAR) to detect targets under foliage is in part determined by the attenuation suffered by radiation propagating through the foliage and the backscatter from the foliage. MIT Lincoln Laboratory made measurements of foliage attenuation and backscatter using the NASA/JPL-UHF, L-, C-band fully-polarimetric SAR in July 1990. In this experiment, a 48 km/sup 2/ forested area near Portage, Maine was imaged. Twenty-seven 8 ft trihedral corner reflectors were arrayed throughout the imaged area in order to measure foliage attenuation. Ground truth was recorded at the time of the experiment in order to correlate the attenuation and backscatter results with foliage biophysical properties. The probability densities for foliage attenuation and for backscatter are determined as functions of frequency, polarization, and depression angle.
机译：合成孔径雷达（SAR）探测树叶下方目标的能力部分取决于通过树叶传播的辐射和树叶的反向散射所遭受的衰减。麻省理工学院林肯实验室于1990年7月使用NASA / JPL-UHF，L波段，C波段全极化SAR对树叶衰减和后向散射进行了测量。成像。在整个成像区域中排列了27个8英尺三面角反射器，以测量树叶的衰减。在实验时记录地面真相，以便将衰减和反向散射结果与叶子的生物物理特性相关联。确定树叶衰减和反向散射的概率密度是频率，极化和俯角的函数。

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