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首页> 外文期刊>Geoscience and Remote Sensing Letters, IEEE >On the Relationship Between Double Bounce and the Orientation of Buildings in VHR SAR Images
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On the Relationship Between Double Bounce and the Orientation of Buildings in VHR SAR Images

机译：VHR SAR图像中双弹跳与建筑物方向的关系

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摘要

In this letter, we study empirically the relation between the double-bounce effect of buildings in very high resolution (VHR) synthetic aperture radar (SAR) and the orientation angle for two different ground materials (i.e., asphalt and grass) by analyzing two different TerraSAR-X VHR spaceborne SAR images. Furthermore, we compare our empirical results with the simulations obtained using theoretical electromagnetic models. In order to deal with slightly rough surfaces, we also present a novel model for double-bounce scattering based on the small-perturbation method. We show that the double-bounce effect results in different power signatures, depending on the type of the building and the surrounding ground properties. Finally, we discuss the reliability of theoretical models for predicting the double-bounce power for the analyzed data sets. The models can predict the general behavior of the double bounce but lack in calculating the accurate double-bounce radar cross section reliably.
机译：在这封信中，我们通过分析两种不同的地面材料，从经验上研究了建筑物在超高分辨率（VHR）合成孔径雷达（SAR）中的双重弹跳效应与两种不同地面材料（即沥青和草皮）的定向角之间的关系。 TerraSAR-X VHR星载SAR图像。此外，我们将实证结果与使用理论电磁模型获得的仿真结果进行比较。为了处理稍微粗糙的表面，我们还提出了一种基于小扰动方法的新型双反弹散射模型。我们表明，根据建筑物的类型和周围的地面特性，双重反弹效应会导致不同的功率信号。最后，我们讨论了用于预测所分析数据集的双反弹功率的理论模型的可靠性。这些模型可以预测双弹跳的一般行为，但缺乏可靠地计算出精确的双弹跳雷达截面的能力。

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