| InSAR自适应图像配准的干涉相位估计方法 |
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| 引用本文： | 李海,廖桂生.InSAR自适应图像配准的干涉相位估计方法[J].电子学报,2007,35(3):420-425. |
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| 作者姓名： | 李海 廖桂生 |
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| 作者单位： | 西安电子科技大学雷达信号处理重点实验室,陕西西安,710071;西安电子科技大学雷达信号处理重点实验室,陕西西安,710071 |
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| 基金项目： | 国家自然科学基金，教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 提出了一种基于联合单像素模型的InSAR(Interferometric Synthetic Aperture Radar)干涉相位估计方法.能够根据配准误差的大小和方向来构造最优加权观测矢量,同时利用相邻像素的信息,因此具有自适应图像配准和降低相位噪声功能,因而可以在SAR图像配准精度很差(可以允许达到一个分辨单元)的条件下准确地估计相应像素间的干涉相位.
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| 关 键 词： | 干涉合成孔径雷达 干涉相位 图像配准 加权 观测矢量 |
| 文章编号： | 0372-2112（2007）03-0420-06 |
| 收稿时间： | 2005-05-20 |
| 修稿时间： | 2005-05-202005-12-20 |
An Estimation Method for InSAR Interferometric Phase with Adaptive Image Coregistration |
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| LI Hai,LIAO Gui-sheng.An Estimation Method for InSAR Interferometric Phase with Adaptive Image Coregistration[J].Acta Electronica Sinica,2007,35(3):420-425. |
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| Authors: | LI Hai LIAO Gui-sheng |
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| Affiliation: | National Key Lab for Radar Signal Processing,Xidian University,Xi’an,Shaanxi 710071,China |
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| Abstract: | We propose a method to estimate the InSAR(Interferometric Synthetic Aperture Radar) interferometric phase based on the model of joint single pixel.In the method we construct the optimal weighted data vector by different coregistration error size and direction.The method takes advantage of the coherence information of neighboring pixel pairs.Therefore it can auto-coregister the SAR images and reduce the interferometric phase noise simultaneously.Theoretical analysis and computer simulation results show that the method can provide accurate estimate of the terrain interferometric phase(interferogram) even if the coregistration error reaches one pixel. |
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| Keywords: | interferometric synthetic aperture radar(InSAR) interferometric phase image coregistration weighted data vector |
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