| 基于瞬时频率估计的InSAR相位解缠 |
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| 引用本文： | 靳国旺,徐国华,余懋勋,谭雄,张宇驰.基于瞬时频率估计的InSAR相位解缠[J].测绘学院学报,2009(1). |
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| 作者姓名： | 靳国旺 徐国华 余懋勋 谭雄 张宇驰 |
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| 作者单位： | 信息工程大学测绘学院;中国科学院电子学研究所微波成像技术国家重点实验室; |
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| 基金项目： | 国家自然科学基金资助(40771142,40871213);;国家西部1∶5万地形图空白区测图工程资助;;信息工程大学测绘学院学员科技创新项目资助(X0707);;中国博士后科学基金资助 |
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| 摘 要： | 相位解缠是InSAR处理的关键步骤,解缠结果的可靠性和稳定性影响着InSAR测量的性能。从干涉条纹频率与相位解缠结果之间的内在联系出发,推导了干涉条纹频率与干涉复数值之间的严密关系式,设计了基于瞬时频率估计的相位解缠方法,采用多套干涉数据获取的干涉图进行了相位解缠实验,验证了基于瞬时频率估计方法进行相位解缠的可行性。
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| 关 键 词： | 干涉图 合成孔径雷达干涉测量 相位解缠 瞬时频率 |
Phase Unwrapping Based on Estimation of Instantaneous Frequencies |
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| JIN Guo-wang,XU Guo-hua,YU Mao-xun,TAN Xiong,ZHANG Yu-chi.Phase Unwrapping Based on Estimation of Instantaneous Frequencies[J].Journal of Institute of Surveying and Mapping,2009(1). |
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| Authors: | JIN Guo-wang XU Guo-hua YU Mao-xun TAN Xiong ZHANG Yu-chi |
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| Institution: | 1.Institute of Surveying and Mapping;Information Engineering University;Zhengzhou 450052;China;2.The National Key Lab of Microwave Imaging Technology;Institute of Electronics;Chinese Academy of Science;Beijing 100190;China |
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| Abstract: | Phase unwrapping is a key step in the processing of Interferometric Synthetic Aperture Radar(InSAR).Its reliability and availability affect the performance of InSAR.In this paper,the rigorous formula for instantaneous frequencies and complex interferometric data was educed.And the phase unwrapping algorithm based on estimation of instantaneous frequencies was designed.Some interferometric data were used to do phase unwrapping experiments.Their results validated this algorithm. |
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| Keywords: | interferogram interferometric synthetic aperture radar phase unwrapping instantaneous frequency |
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