中文摘要：

提出基于卫星升降轨多孔径雷达干涉（MAI）与常规InSAR联合处理的严密模型（融入了三维位移分量及相位解缠偏差校准参数）和基于加权最小二乘解算的方法提取地表三维形变场。以2003年伊朗Bam地震为实验区，选择已有滑动断层模型和基于像素偏移估计（AZO）的方位向形变结果作为参考，对联合解算所得到的三维形变场进行准确性评价。分析表明，MAI在方位向形变的估计精度和计算效率比AZO均有明显提升；实测形变场和已有滑动断层模型吻合程度较高，二者在垂直、南北和东西3个方向的均方根误差分别为2．7、4．1和3．2cm。

英文摘要：

A rigorous model extracting the 3D dimension deformation field by integrating the multiple aperture interferometry （MAI） data and the conventional InSAR data along both ascending and descending orbits for was proposed in the paper. The coseismic deformation field caused by the 2003 Bam earthquake （Iran） was selected as the testing site, and the 3D deformation field derived with the model is compared with the existing fault model and the azimuth offsets （AZO）derived by coregistration of amplitude images. The testing results indicate that the azimuth displacement derived by MAI is improved in terms of accuracy and computation efficiency, and the 3D coseismic displacement is consistent with the fault model. The root mean square error （RMSE） between the two types of results are 2.7,4.1 and 3.2 cm in vertical, north-south and east-west direction,respectively.