SAR raw signal simulation for urban structures
SAR raw signal simulation for urban structures
复制标题
DOI：
10.1109/tgrs.2003.814626
复制
发表时间：
2003-09-01
影响因子：
8.2
通讯作者：
Ruello, G
中科院分区：
文献类型：
--
作者：
Franceschetti, G;Iodice, A;Ruello, G
本文介绍了一种用于城市场景的合成孔径雷达（SAR）原始信号模拟器，沿着给出了它用来计算后向散射场和计算成像雷达的模型。传感器特性城市区域被表示为一组放置在随机粗糙非平坦介电地形上的介电建筑物。所采用的模型允许在良好的物理和数学背景上对原始信号进行评估：散射模型采用适当扩展以包括多次反射效应的基尔霍夫方法，雷达模型在二维傅立叶变换域中操作。详细评估如何以及为什么模拟器也是有效的计算时间方面提供。此外，相关的例子进行了讨论，以显示模拟器的潜力和评估的有效性的主要结果。结果表明，该模拟器能够定量评估SAR传感器在城市结构的性能。建议的模拟器原来也是有用的训练数值方案致力于特征提取，并测试任何特定的SAR处理技术。进一步发展的仿真工具的意见。
In this paper, a synthetic aperture radar (SAR) raw signal simulator for urban scenes is presented along with models it employs to,compute the backscattered field and to account for the imaging radar. sensor characteristics. Urban areas are represented as a set of dielectric buildings placed over a random rough nonflat dielectric terrain. The adopted models allow evaluation of the raw signal on a sound physical and mathematical background: the scattering model employs the Kirchhoff approach appropriately extended to include multiple-reflection effects, and the radar model operates in the two-dimensional Fourier transformed domain. Details to assess how and why the simulator is also efficient with respect to the computational time are provided. In addition, relevant examples are discussed to show the simulator potentialities and assess the validity of the main results. It is shown that the simulator is able to quantitatively assess performances of SAR sensors over urban structures. The proposed simulator turns out to be also useful to train numerical schemes devoted to feature extraction, and to test any specific SAR processing technique. Comments for further developments of the simulation tool are presented.