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    • 4. 发明申请
    • SIDE LOBE SUPPRESSION METHOD FOR SYNTHETIC APERTURE RADAR (SAR) IMAGE
    • 合成孔径雷达(SAR)图像的侧面抑制方法
    • US20130050017A1
    • 2013-02-28
    • US13395821
    • 2011-04-29
    • Yi SuHuaijun WangYu LiMin Lu
    • Yi SuHuaijun WangYu LiMin Lu
    • G01S13/90
    • G01S13/90G01S7/2813G01S13/904G06T5/10G06T5/50G06T2207/10044G06T2207/20224
    • A side lobe suppression method for an SAR image based on the deformation of a spatial spectral support area is provided. Using the relationship between the spatial spectral support area distribution of an SAR system and an impulse response, the trend of a side lobe in the impulse response is changed by deforming the spatial spectral support area; two SAR images with different side lobe trends are obtained by calculation; the difference information of the side lobe trends between the two SAR images is finally utilized to realize the mutual separation of a target main lobe and the side lobe, thus realizing effective side lobe suppression. The method has an obvious effect on side lobe suppression without losing image resolution, at the same time, can be realized simply, has less calculation amount, is not sensitive to noise, is also very convenient to implement, and can be directly used for processing an original SAR image.
    • 提供了一种基于空间光谱支持区域的变形的SAR图像的旁瓣抑制方法。 利用SAR系统的空间谱支持区域分布与脉冲响应之间的关系,通过使空间谱支持区域变形来改变脉冲响应中旁瓣的趋势; 通过计算获得具有不同旁瓣趋势的两个SAR图像; 最终利用两个SAR图像之间的旁瓣趋势的差异信息来实现目标主瓣和旁瓣的相互分离,从而实现有效的旁瓣抑制。 该方法对旁瓣抑制有明显的影响,不失去图像分辨率,同时可以简单实现,计算量少,对噪声不敏感,实施起来也非常方便,可直接用于加工 原始的SAR图像。