| 基于稳健波束形成的InSAR干涉相位估计方法 |
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| 引用本文： | 毛志杰,廖桂生.基于稳健波束形成的InSAR干涉相位估计方法[J].电子与信息学报,2009,31(7):1690-1695. |
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| 作者姓名： | 毛志杰 廖桂生 |
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| 作者单位： | 1. 西安电子科技大学雷达信号处理重点实验室,西安,710071;西安通信学院,西安,710061
2. 西安电子科技大学雷达信号处理重点实验室,西安,710071 |
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| 基金项目： | 国家自然科学基金(60736009);;国家杰出青年科学基金(60825104资助课题 |
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| 摘 要： | 该文在联合像素估计干涉相位的基础上，充分利用相邻像素的相干信息，通过校正阵列导向矢量，使得导向矢量与该地面分辨单元的协方差矩阵相对应，通过稳健波束形成实现对地形干涉相位估计。实验结果证明了该方法有效性的同时，能够在SAR图像配准误差较大(可以允许达到一个分辨单元)的情况下，得到稳健的干涉相位估计结果。
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| 关 键 词： | InSAR 干涉相位估计 稳健波束形成 数字高程图 联合像素 |
| 收稿时间： | 2008-3-17 |
| 修稿时间： | 2009-3-9 |
InSAR Interferometric Phase Estimation Based on Robust Beamforming |
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| Mao Zhi-jie,Liao Gui-sheng.InSAR Interferometric Phase Estimation Based on Robust Beamforming[J].Journal of Electronics & Information Technology,2009,31(7):1690-1695. |
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| Authors: | Mao Zhi-jie Liao Gui-sheng |
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| Affiliation: | National Lab of Radar Signal Processing;Xidian Univ.;Xi'an 710071;China;Xi'an Communication Inst.;Xi'an 710061;China |
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| Abstract: | A method of interferometric phase estimation based on the robust beamforming is proposed. The method can provide the accurate interferometric phase estimation, by correcting the spatial steering vector and by taking advantage of the coherence information of the neighboring pixels. Theoretical analysis and experimental results show that the method can present the accurate estimation of the interferometric phase even if the coregistration error be close to one pixel. The effectiveness and robustness of the technique is verified by the simulated and real data. |
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| Keywords: | Interferometric SAR Interferometric phase estimation Robust beamforming Digital Elevation Model (DEM) Joint pixel |
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