基于DEOS精密轨道数据和插值的InSAR高精度配准方法  

The InSAR High Precision Registration Method Based on the DEOS Precise Orbit Data and Interpolation

作　　者：刘磊[1] 王志勇[1] 周兴东[2] 

机构地区：[1]山东科技大学测绘科学与工程学院,山东青岛266510 [2]徐州师范大学测绘学院,江苏徐州221116

出　　处：《山东科技大学学报（自然科学版）》2008年第6期9-15,共7页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：对地观测技术国家测绘局重点实验室经费资助项目(200812)

摘　　要：探讨了InSAR复数据配准的实用化方法。提出了基于DEOS精密轨道数据和插值相干系数矩阵的实用化配准方法,详细地叙述了该方法的数据处理过程。该方法通过对DEOS精密轨道数据进行插值处理,获取景中心的初始偏移量,采用对粗配准得到的相干系数矩阵进行插值处理的方法来代替对主从影像的过采样处理,可以提高配准精度和执行效率。最后以我国西部某山区的ERS-1/2串联飞行数据为例进行了试验,证明本文提出的方法能够满足干涉图生成的要求。This paper mainly discusses the practical methods of registration for the interferometric synthetic aperture radar （InSAR） complex data. It puts forward a new practical method of the registration for two InSAR images based on DEOS precise orbit data and the interpolation of the interference coe/ficient matrixes. It states the procedure of data processing of this method in detail. Firstly, it gets the initial offsets of the central pixel of master image according to the DEOS precise orbit data. The method of interpolating the interference matrix from the coarse registration is adopted instead of over sampling of the single look complex（SLC） data. It not only can get the sub pixel accuracy, but also improve the computing efficiency. At last, registration test is done using the ERS-1/2 tandem InSAR data. It proves that the accuracy of this method can satisfy the requirement of generating the interferogram.

关 键 词：INSAR 配准 相干系数 插值 最小二乘拟合 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]