波数域星载SAR成像

Jiang Hui, Chao-Huan Hou
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引用次数: 2

摘要

讨论了合成孔径雷达(SAR)数据在波数域的处理算法。该成像方法起源于地球物理领域的地震偏移技术,在SAR成像领域得到了改进和发展。分析了原地震偏移技术的基本思想,并对其进行了改进,使之适应星载SAR成像的特点。结果表明,该算法在不增加计算时间的情况下提高了图像质量,因为在方位角方向上可以通过相移和融合来实现校正。
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Spaceborne SAR imaging in wavenumber domain
An algorithm to process the synthetic aperture radar (SAR) data in wavenumber domain, is discussed. Generated from the seismic migration technique in the area of geophysics, this imaging method has been modified and developed in the area of SAR imaging. The basic idea of original seismic migration technique is analysed and modified to suit the feature of spaceborne SAR imaging. The result shows that the new algorithm will improve the image quality without additional computational time because the correction can be realized by phase shifting and fusion to pulse compression in the azimuth direction.
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