摘要
以欧空局重复轨道的ERS-1/2数据为例,论述了星载SAR干涉测量生成DEM过程中的关键技术及其实现。讨论了InSAR生成DEM的一般过程,其中的复型数据的高精度配准与相位解缠是生成DEM所必须解决的两个关键。重点论述了达到子像元精度整体匹配技术的复图像高精度配准方法,各种相位解缠方法及其优缺点。通过生成一幅德国波恩地区的DEM,阐述了相应软件的研制及实验结果。
Two key technologies on resolving DEM generation with space-borne SAR interferometry are described, taking ERS- 1/2 data for example. Firstly, the procedure of InSAR DEM generation is introduced, including two key problems needed to be solved,i.e., highly precise registration of complex SAR images and phase unwrapping. Then, an image registration method, by which sub-image precision can reach matching that of whole image, is represented, and the advantages and disadvatages of several phase unwrapping methods are discussed. Lastly, a DEM generation example of Born area in German with the software developed by the authors of this paper is demonstrated.
出处
《长江科学院院报》
CSCD
北大核心
2004年第3期71-75,共5页
Journal of Changjiang River Scientific Research Institute
基金
863<对地观测数据综合处理原型系统>项目资助(2003AA135010)
