分布式卫星SAR的波束形成和多视处理成像
The imaging of distributed satellite SAR system using beamforming and multi look
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摘要: 针对分布式卫星SAR的正侧视工作模式,该文建立了雷达信号的回波模型,提出了分布式卫星SAR中单个星载SAR的成像算法和利用波束形成和多视处理合成分布式卫星SAR图像的算法。理论分析和仿真结果表明:该算法能在不改变图像分辨力的情况下提高图像的信噪比和抑制相干斑,改善图像质量。Abstract: Based on the side-looking mode SAR of distributed satellites SAR system. This paper gives the mathematical model of SAR echo signal, and proposes a imaging algorithm of the single satellite SAR of distributed satellite SAR and imaging algorithm of distributed satellite SAR system by beamforming and multilook. The results of theory analysis and simulation show that the algorithm can enhance SNR and suppress the speckle noise of resulted image without changing the resolution of SAR image, improve images quality.
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J. Stile.[J].N. Goodman, SiChung Lin, Performance and processing of SAR satellite clusters, Proc.IGARSS2000, Honolulu, Hi, USA.2000,:-[2]刘永坦,雷达成像技术,哈尔滨,哈尔滨工业大学出版社,1999,36-46. -
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