| 星载SAR海面场景回波仿真 |
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| 引用本文： | 王敏,何志华,董臻,梁甸农.星载SAR海面场景回波仿真[J].信号处理,2008,24(5). |
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| 作者姓名： | 王敏 何志华 董臻 梁甸农 |
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| 作者单位： | 国防科技大学电子科学与工程学院,长沙,410073 |
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| 摘 要： | 利用分形海面模型、Kirchhoff近似电磁散射模型和基于时序的动态场景回波仿真模型得到星载SAR海面场景回波.给出理想单色波海浪和分形海面回波仿真实例,回波成像结果符合倾斜调制、速度聚束调制和实际海面SAR图像的统计特性,表明该方法有效.仿真得到的回波数据可为星载SAR海面顺轨干涉(ATl-SAR)测洋流、海洋全极化探测、反演海谱等仿真研究提供源数据.
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| 关 键 词： | 星载SAR 回波仿真 分形海面模型 海面电磁散射模型 |
Spaceborne SAR Raw Signal Simulation of Ocean Scene |
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| WANG Min,HE Zhi-hua,DONG Zhen,HANG Dian-nong.Spaceborne SAR Raw Signal Simulation of Ocean Scene[J].Signal Processing,2008,24(5). |
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| Authors: | WANG Min HE Zhi-hua DONG Zhen HANG Dian-nong |
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| Abstract: | According to fractal ocean surface model,electromagnetic scattering model under Kirehhoff Approximation and the raw signal simulation procedure of dynamic scene based on time domain,spaceborne synthetic aperture radar (SAR) raw signal of ocean scene is generated.The SAR images obtained from the echo of both simple cosine wave and complex fractal ocean surface are in accord- ance with the tilt modulation and the velocity bunching theoretically,and also support the statistical properties of real ocean SAR images, which validate the simulation procedure.The raw signal could be the input data of Along-Track Interferometric SAR (ATI-SAR) for o- cean current measurements,full polarized scattering research,ocean wave spectra detecting,etc. |
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| Keywords: | spaceborne SAR raw signal simulation fractal ocean surface model ocean scattering model |
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