测绘学报 ›› 2015, Vol. 44 ›› Issue (11): 1263-1270.doi: 10.11947/j.AGCS.2015.20140694

• 摄影测量学与遥感 • 上一篇    下一篇

面向多基线干涉SAR高程反演的全局最优相干方法

花奋奋1, 赵争2, 王萌萌2, 张继贤2, 黄国满2   

  1. 1. 中国矿业大学环境与测绘学院, 江苏 徐州 221116;
    2. 中国测绘科学研究院, 北京 100830
  • 收稿日期:2014-12-30 修回日期:2015-06-09 出版日期:2015-11-20 发布日期:2015-11-25
  • 作者简介:花奋奋(1985-),男,博士生,研究方向为干涉合成孔径雷达数据处理。E-mail:bthree@tom.com
  • 基金资助:
    国家自然科学基金(41401530);2015年度遥感青年科技人才创新资助计划;测绘地理信息公益性行业科研专项(201412002;201412010);江苏高校优势学科建设工程资助项目

A Global Optimal Coherence Method for Multi-baseline InSAR Elevation Inversion

HUA Fenfen1, ZHAO Zheng2, WANG Mengmeng2, ZHANG Jixian2, HUANG Guoman2   

  1. 1. School of Environmental Science and Spatial Informatics, China University of Mining & Technology, Xuzhou, Jiangsu 221008, China;
    2. Chinese Academy of Surveying and Mapping, Beijing 100830, ChinaAbstract
  • Received:2014-12-30 Revised:2015-06-09 Online:2015-11-20 Published:2015-11-25
  • Supported by:
    The National Natural Science Foundation of China(No. 41401530) The 2015 Annual Remote Sensing Young Talents of Innovation Foundation Public Science Research Program of Surveying, Mapping and Geoinformation(Nos. 201412002201412010) A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘要: 本文针对多基线极化干涉SAR数据,提出了面向多基线干涉SAR高程反演的全局最优相干方法。该方法将多景全极化干涉影像联合在一起,构建多基线极化相干矩阵,由多基线最优相干准则指导,求解全局条件下的最优干涉图。该方法可以有效降低多基线干涉中散射中心不一致对干涉相位影响,从而提高干涉相位的精度和可靠性,并提高最终获取DEM的精度。利用国产X-SAR系统和德国E-SAR系统获取的多基线全极化数据进行全局最优相干方法试验,利用多基线极化最优相干方法生成全局条件下的最优干涉图,依据多基线高程反演方法计算目标高程,验证了本文提出的方法的有效性。

关键词: 多基线, 干涉SAR, 极化最优相干, 高程反演, 散射中心

Abstract: A global optimal coherence method for elevation inversion from multi-baseline polarimetric InSAR data is proposed. The multi-baseline polarimetric InSAR data used in experiments were obtained by Chinese X-SAR system and Germany's E-SAR system. Through combining several full polarimetric InSAR images, the proposed method constructs the multi-baseline polarimetric InSAR coherency matrix, and solves the optimal interferograms under global optimal coherence criterion. The optimal interferograms generated by global optimal coherence method were used to calculate the elevation of target with multi-baseline InSAR elevation inversion method. The proposed method reduces the influence of different scattering centers effectively using multi-baseline InSAR, which improves the accuracy and reliability of the interferometric phase and eventually improves the accuracy of DEM. The results verify the validity of the proposed method.

Key words: multibaseline, interferometric SAR, polarimetric coherence optimization, elevation inversion, scattering center

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