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基于模拟干涉相位去斜的SAR层析处理方法 被引量:2

SAR Tomography Based on Simulated Interferometric Phase
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摘要 合成孔径雷达层析解决了传统合成孔径雷达二维成像在高程向分辨率丧失的难题,通过不同空间位置的多次观测在目标高程向形成合成孔径,真正实现了对目标的三维成像。以合成孔径雷达层析处理中的去斜操作这一重要步骤为研究对象,提出一种基于模拟干涉相位的去斜方法。该方法可以避免额外大气相位误差的引入,并且仅需要低精度的地面高程数据就可得到理想的去斜效果,所以利于提高合成孔径雷达层析的精度和实用化程度。最后利用实测数据进行了合成孔径雷达层析处理实验,处理结果证明了基于模拟干涉相位去斜方法的正确性与有效性。 Synthetic Aperture Radar (SAIl) Tomography extends the capability of SAIl systems and allows reconstrucling the height profile of observed scene. The deramping, one of important processes of SAlt tomography, was investigated and a new deramping method based on simulated interfeometric phase was proposed. This method can avoid extra atmosphere phase and obtain excellent deramping result using low precise elevation of the target, so it facilitates SAIl Tomography. Finally, the validity and availability of this method is validated by the results obtained by processing real data.
出处 《国防科技大学学报》 EI CAS CSCD 北大核心 2011年第3期105-110,共6页 Journal of National University of Defense Technology
基金 国家自然科学基金资助项目(61002031)
关键词 合成孔径雷达 层析 去斜 三维成像 synthetic aperture radar tomography deramping three-dimensional focusing
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参考文献15

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二级参考文献25

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