Wideband Echo Simulation and Its Application to SAR Image of Complex Targets
Wideband Echo Simulation and Its Application to SAR Image of Complex Targets
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DOI：
10.1109/apusncursinrsm.2018.8608605
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发表时间：
2018-07
期刊：
影响因子：
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通讯作者：
Xin-Zhuo Li;Y. Jiao;Wangqiang Jiang;Min Zhang
中科院分区：
文献类型：
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作者：
Xin-Zhuo Li;Y. Jiao;Wangqiang Jiang;Min Zhang
与窄带信号相比，宽带回波信号包含了更多的频率成分，这些成分与中心频率具有不同的散射特性。为了更准确地模拟宽带合成孔径雷达(SAR)的散射回波，提出了一种基于频域的回波仿真方法，该方法综合考虑了各频率分量的散射特性。采用几何光学(GO)和物理光学(PO)相结合的混合方法计算各频率分量的散射特性，该方法考虑了反射光的散射，计算精度较高。利用宽带回波信号生成合成孔径雷达图像，分析多次散射对复杂目标的影响。
Compared to the narrow band signal, the wideband echo signal includes much more frequency components which have different scattering property with the center frequency. To simulate the scattering echo for the wideband synthetic aperture radar (SAR) more precise, the frequency domain based echo simulation method is proposed which considers the scattering properties of all frequency components. And the hybrid method that combines the geometrical optics (GO) and physical optics (PO), which considers the scattering of reflected rays and has a high calculation accuracy, is used to calculate the scattering property of each frequency component. With the wideband echo signal, the SAR image is generated to analyze to the impact of multiple scattering on complex target.