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基于ISAR的曲线SAR自聚焦算法

Autofocus algorithm for curvilinear SAR based on ISAR
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摘要 在曲线合成孔径雷达(synthetic aperture radar,SAR)系统中,由于采用曲线孔径使得孔径误差补偿问题十分复杂.本文基于逆合成孔径雷达(inverse SAR,ISAR)相位补偿思想,用参考点所在距离单元相位补偿孔径误差,并由补偿数据中提取散射点的三维特征.仿真实验表明,新算法由无噪数据中获得的散射点分布与散射点真实分布只是存在着空间位置上的偏移,但目标结构特征未变.因此新算法是一种适用于曲线SAR的有效自聚焦算法.
出处 《信号处理》 CSCD 北大核心 2005年第z1期506-509,共4页 Journal of Signal Processing
基金 本课题得到高等学校博士学科点专项科研基金(20030003006)和航天支撑基金(J04-2005047)资助
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参考文献8

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