【摘要】 PS-InSAR干涉中公共主影像的选择关系到干涉的质量。本文在综合考虑时空基线距和多普勒质心频率基线对干涉图去相关影响的基础上,提出以综合相关系数为测度的公共主影像最佳选择方法。借助欧空局提供的20景大同地区ENVISAT SLC SAR图像,进行PS-InSAR公共主影像的优化选取实验。通过计算发现,指数权比对公共主影像的选择影响不大,因此建议在实际应用过程中,可直接按等指数权比计算综合相关系数,以此确定最佳公共主影像。更多还原

【Abstract】 The choice of common master image in PS-InSAR interferometry is related to the interferometric quality.Considering the spatial baselines,temporal baselines and the Doppler centroid frequency difference on interferometric decorrelation of image pairs,this paper proposed a method about optimal selection of commom master image flow to integrated correlation function.With the aid of European Space Agency providing 20 ENVISAT SLC SAR scenes over Datong,the experiments of commom master image selection in PS-InSAR were performed.Testing results showed that the weight proportion of parameters had little influence on optimum selection,and it was suggested that in the practical application,optimum selection can be determined in accordance with equal weight proportion of parameters.更多还原