面向多基线干涉SAR高程反演的改进最大似然高程估计方法Improved maximum likelihood height estimation method for multi-baseline InSAR elevation inversion
花奋奋,张继贤,黄国满,王萌萌
摘要(Abstract):
多基线干涉SAR以其避开相位解缠、无需控制点等优势得到越来越多的重视。本文介绍了多基线高程反演中最常使用的MLHE算法,分析了该方法的局限性,指出其不适用于真实数据,特别是机载数据;然后将由RD模型和椭球方程组成的严密几何模型引入到MLHE算法中,对算法加以改进。最后利用中国测绘科学研究院的CASMSAR-X系统获取的多基线干涉数据进行实验,获得了良好的效果。
关键词(KeyWords): 多基线干涉SAR;高程反演;MLHE;干涉相位
基金项目(Foundation): 国家863计划主题项目(2011AA120405-1);国家863计划主题项目(2011AA120402)
作者(Author): 花奋奋,张继贤,黄国满,王萌萌
DOI: 10.16251/j.cnki.1009-2307.2014.03.003
参考文献(References):
- [1]Xu W,Chang C,Kwoh L K,et al.Phase unwrapping of SAR interferogram with multi-frequency or multi-baseline[C]//Proc.of IGARSS’94.Pasadena,CA,1994:730-732.
- [2]Lombardini F.Absolute phase retrieval in a three-element synthetic aperture radar interferometer[C]//Proc.of CIE International Conference of Radar,1996:309-312.
- [3]Pascazio V,Schirinzi G.Estimation of terrain Elevation by multifrequency interferometric wide band SAR data[J]//IEEE Signal Processing Letters,2001,8:7-9.
- [4]Pascazio V,Schirinzi G.Multifrequency InSAR height reconstruction through maximum likelihood estimation of local planes parameters[C]//IEEE Transactions on Image Processing.2002,11(12):1478-1489.
- [5]Ferraiuolo G,Pascazio V,Schirinzi G.Maximum a posteriori estimation of height profiles in InSAR imaging[J].IEEE Geoscience and Remote Sensing Letters.2004,1(2):66-70.
- [6]Schmitt M,Schmitt U.Compressive sensing based layover separation in airborne single-pass multi-baseline InSAR data[C]//IEEE Transactions on Geoscience and Remote Sensing,2013,51(3):313-317.
- [7]张秋玲,王岩飞.利用多基线数据融合提高分布式卫星InSAR系统的干涉相位精度[J].电子与信息学报,2006,28(11):2011-2014.
- [8]Li Zhen-fang,Bao Zheng,Li Hai,et al.Image autocoregistration and InSAR interferogram estimation using joint subspace projection[C]//IEEE Transactions on Geoscience and Remote Sensing,2006,44(2):288-297.
- [9]李海.干涉合成孔径雷达信号处理若干关键问题研究[D].西安:西安电子科技大学,2008.
- [10]毛志杰.干涉合成孔径雷达信号处理方法研究[D].西安:西安电子科技大学,2009.
- [11]Lee J S,Hoppel K W,Mango S A,et al.Intensity and phase statistics of multilook polarimetric and interferometric SAR imagery[C]//IEEE Transactions on Geoscience and Remote Sensing,1994,32(5):1017-1028.
- [12]Bamler R,Hartl P.Synthetic aperture radar interferometry[J].Inverse Problems,1998,14(4):1-54.