| InSAR相位解缠算法的分析评价 |
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| 引用本文： | 曹振坦,刘国林,郝华东.InSAR相位解缠算法的分析评价[J].全球定位系统,2011,36(6):32-36. |
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| 作者姓名： | 曹振坦 刘国林 郝华东 |
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| 作者单位： | 1. 山东科技大学测绘科学与工程学院,山东青岛,266510
2. 舟山市质量技术监督检测院计量检定测试中心,浙江舟山,316021 |
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| 基金项目： | 国家自然科学基金(40874001); 海岛(礁)测绘技术国家测绘重点实验室资助项目(2010A01) |
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| 摘 要： | 相位解缠是合成孔径雷达干涉测量技术（InSAR）数据处理过程中的关键步骤,相位解缠算法的选取关系到InSAR最终成果数字方程模型（DEM）或者形变量的精度。介绍了相位解缠的基本原理,利用基于路径跟踪、最小范数和网络流思想的8种解缠算法对加拿大魁北克地区合成孔径雷达（SAR）干涉图进行相位解缠,通过不同的评价指标对解缠结果进行了评价比较。实验结果表明：Flynn最小不连续法、最小Lp范数法和Snaphu网络流法具有较好的稳定性和适应性。
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| 关 键 词： | InSAR 相位解缠 算法评价 |
Analysis and Evaluation of InSAR Phase Unwrapping Algorithm |
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| CAO Zhen-tan,LIU Guo-lin,HAO Hua-dong.Analysis and Evaluation of InSAR Phase Unwrapping Algorithm[J].Gnss World of China,2011,36(6):32-36. |
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| Authors: | CAO Zhen-tan LIU Guo-lin HAO Hua-dong |
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| Institution: | CAO Zhen-tan1,LIU Guo-lin1,HAO Hua-dong2(1.Geomatics college,Shandong University of Science and Technology,Qingdao Shandong 266510,China,2.Metrology Verification and Testing Institute,Zhoushan Institute of Calibration and Testing for Quality and Technical Supervision,Zhoushan Zhejiang 316021,China) |
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| Abstract: | Phase unwrapping is the key step of InSAR data processing,the selection of phase unwrapping algorithms concern the accuracy of InSAR final result（DEM or deformation）.The basic principle of phase unwrapping is introduced with eight algorithms based on path-following,minimum norm and network-flow to unwrap the interferogram over the Quebec area in Canada is unwrapped.The unwrapping results were evaluated and compared by different criteria.Experimental results prove that the Flynn minimum discontinuity method、minimum Lp norm method and the Snaphu net-work flow method have preferable stability and adaptability. |
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| Keywords: | InSAR phase unwrapping algorithm evaluation |
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