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分布式Spotlight SAR方位分辨率提高与地形效应补偿

Method of distributed spotlight SAR azimuth resolution improvement and topographic effects compensation
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摘要 研究了利用分布式小卫星提高Spotlight SAR方位向分辨率的原理和具体的实现方法。同时详细研究了地面高度对合成信号方位向分辨率的影响。与单SAR成像不同,地面高度除了使图像几何失真,还会导致方位分辨率恶化。针对其影响,提出了相应的补偿方法。最后通过数值仿真验证了上述方法的有效性。 The principle of improving spotlight SAR azimuth resolution with multiple SAR surveys and the approach to implement it are presented. Meanwhile the topographic effects on azimuth resolution of synthesized signal is also analyzed. Different from single SAR imaging, topographic effects worsen the azimuth resolution of multiple SAR surveys besides geometry distortion. A method is proposed to offset topographic effects. The nu merical simulation examples show the effectiveness of the method.
作者 袁新哲 郭振永 冯宏川 张平
机构地区 中国科学院电子学研究所
出处 《系统工程与电子技术》 EI CSCD 北大核心 2006年第12期1794-1796,1803,共4页 Systems Engineering and Electronics
关键词 分布式小卫星 聚束模式 方位分辨率 地形效应 multiple SAR surveys spotlights azimuth resolution topographic effect
分类号 TN958.6 [电子电信—信号与信息处理]
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参考文献6

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系统工程与电子技术
2006年 第12期

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