地基干涉合成孔径雷达图像非线性大气相位补偿方法
TN95; 采用基于永久散射体(PS)技术的大气相位(AP)补偿方法对地基干涉合成孔径雷达(GB-InSAR) 干涉相位图进行分析时,部分图像的干涉相位随距离呈现出复杂的非线性,导致无法建立合理的多参数模型来模拟大气相位,常规的补偿方法不再适用.该文提出一种改进的GB-InSAR图像非线性大气相位补偿方法,首先采用常规方法对干涉相位图进行大气相位补偿,并根据PS点的补偿后相位序列的标准差,进行稳定PS点的选择,然后对稳定PS点进行子区域划分,通过反距离加权插值估计出所有PS点的大气相位,从而实现大气相位的有效补偿.采用该文所提方法,对460幅雷达图像进行了处理,相比于常规方法,可以有效地补偿干...
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Published in | 雷达学报 Vol. 8; no. 6; pp. 831 - 840 |
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Main Authors | , , , |
Format | Journal Article |
Language | Chinese |
Published |
北京理工大学信息与电子学院雷达技术研究所 北京 100081%北京理工大学卫星导航电子信息技术教育部重点实验室 北京 100081
2019
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Subjects | |
Online Access | Get full text |
ISSN | 2095-283X |
DOI | 10.12000/JR19073 |
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Abstract | TN95; 采用基于永久散射体(PS)技术的大气相位(AP)补偿方法对地基干涉合成孔径雷达(GB-InSAR) 干涉相位图进行分析时,部分图像的干涉相位随距离呈现出复杂的非线性,导致无法建立合理的多参数模型来模拟大气相位,常规的补偿方法不再适用.该文提出一种改进的GB-InSAR图像非线性大气相位补偿方法,首先采用常规方法对干涉相位图进行大气相位补偿,并根据PS点的补偿后相位序列的标准差,进行稳定PS点的选择,然后对稳定PS点进行子区域划分,通过反距离加权插值估计出所有PS点的大气相位,从而实现大气相位的有效补偿.采用该文所提方法,对460幅雷达图像进行了处理,相比于常规方法,可以有效地补偿干涉相位图中的非线性大气相位分量.基于若干高稳定参考点的对比结果表明,该方法减小了最大约1 rad的相位测量误差. |
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AbstractList | TN95; 采用基于永久散射体(PS)技术的大气相位(AP)补偿方法对地基干涉合成孔径雷达(GB-InSAR) 干涉相位图进行分析时,部分图像的干涉相位随距离呈现出复杂的非线性,导致无法建立合理的多参数模型来模拟大气相位,常规的补偿方法不再适用.该文提出一种改进的GB-InSAR图像非线性大气相位补偿方法,首先采用常规方法对干涉相位图进行大气相位补偿,并根据PS点的补偿后相位序列的标准差,进行稳定PS点的选择,然后对稳定PS点进行子区域划分,通过反距离加权插值估计出所有PS点的大气相位,从而实现大气相位的有效补偿.采用该文所提方法,对460幅雷达图像进行了处理,相比于常规方法,可以有效地补偿干涉相位图中的非线性大气相位分量.基于若干高稳定参考点的对比结果表明,该方法减小了最大约1 rad的相位测量误差. |
Author | 田卫明 曾涛 胡程 邓云开 |
AuthorAffiliation | 北京理工大学信息与电子学院雷达技术研究所 北京 100081%北京理工大学卫星导航电子信息技术教育部重点实验室 北京 100081 |
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Author_FL | TIAN Weiming HU Cheng DENG Yunkai ZENG Tao |
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DocumentTitle_FL | A Compensation Method of Nonlinear Atmospheric Phase Applied for GB-InSAR Images |
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Keywords | 反距离加权插值 大气相位补偿 地基干涉合成孔径雷达 非线性变化 稳定永久散射体 |
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Title | 地基干涉合成孔径雷达图像非线性大气相位补偿方法 |
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