稀疏重航过阵列SAR运动误差补偿和三维成像方法

TN957.51; 该文针对机载交轨阵列SAR下视3维成像模型,采用以巴克码伪随机序列为准则的稀疏重航过采样方式,利用较少飞行次数提高交轨向分辨率.针对重航过采样方式存在的运动误差,利用修正均匀冗余阵列(Modi-fied Uniformly Redundant Arrays,MURA)编码空间调制和3维后向投影(Back Projection,BP)算法获得各航过3维复图像对,基于干涉处理和频域压缩感知(Compressed Sensing,CS)等效实现各航过阵列形变误差补偿.将MURA反码对应回波形成的3维复图像相位作为参考,对各单航过复图像进行相位补偿,以恢复各航过间复图像相位关系.根...

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Published in雷达学报 Vol. 7; no. 6; pp. 717 - 729
Main Authors 田鹤, 李道京
Format Journal Article
LanguageChinese
Published 北京环境特性研究所电磁散射重点实验室北京 100854%中国科学院电子学研究所微波成像技术重点实验室北京 100190 01.12.2018
Subjects
运动误差补偿
稀疏重航过
干涉处理
频域稀疏
SAR3维成像
压缩感知
Online AccessGet full text
ISSN2095-283X
DOI10.12000/JR18101

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Abstract TN957.51; 该文针对机载交轨阵列SAR下视3维成像模型,采用以巴克码伪随机序列为准则的稀疏重航过采样方式,利用较少飞行次数提高交轨向分辨率.针对重航过采样方式存在的运动误差,利用修正均匀冗余阵列(Modi-fied Uniformly Redundant Arrays,MURA)编码空间调制和3维后向投影(Back Projection,BP)算法获得各航过3维复图像对,基于干涉处理和频域压缩感知(Compressed Sensing,CS)等效实现各航过阵列形变误差补偿.将MURA反码对应回波形成的3维复图像相位作为参考,对各单航过复图像进行相位补偿,以恢复各航过间复图像相位关系.根据单航过阵列SAR3维复图像具备频域稀疏的性质,对各个复图像相干累加,实现稀疏重航过阵列SAR高分辨率下视3维成像.仿真和暗室试验数据处理结果验证了方法的有效性.
AbstractList TN957.51; 该文针对机载交轨阵列SAR下视3维成像模型,采用以巴克码伪随机序列为准则的稀疏重航过采样方式,利用较少飞行次数提高交轨向分辨率.针对重航过采样方式存在的运动误差,利用修正均匀冗余阵列(Modi-fied Uniformly Redundant Arrays,MURA)编码空间调制和3维后向投影(Back Projection,BP)算法获得各航过3维复图像对,基于干涉处理和频域压缩感知(Compressed Sensing,CS)等效实现各航过阵列形变误差补偿.将MURA反码对应回波形成的3维复图像相位作为参考,对各单航过复图像进行相位补偿,以恢复各航过间复图像相位关系.根据单航过阵列SAR3维复图像具备频域稀疏的性质,对各个复图像相干累加,实现稀疏重航过阵列SAR高分辨率下视3维成像.仿真和暗室试验数据处理结果验证了方法的有效性.
Author 李道京
田鹤
AuthorAffiliation 北京环境特性研究所电磁散射重点实验室北京 100854%中国科学院电子学研究所微波成像技术重点实验室北京 100190
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Li Daojing
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Keywords 运动误差补偿
稀疏重航过
干涉处理
频域稀疏
SAR3维成像
压缩感知
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Snippet TN957.51; 该文针对机载交轨阵列SAR下视3维成像模型,采用以巴克码伪随机序列为准则的稀疏重航过采样方式,利用较少飞行次数提高交轨向分辨率.针对重航过采样方式存在的运动...
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Title 稀疏重航过阵列SAR运动误差补偿和三维成像方法
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