A High Accurate Approach for InSAR Flat Earth Effect Removal
Synthetic aperture radar interferometry (InSAR) technique is an effective measurement for generating large scale and accurate digital elevation modeling (DEM). The removal of the fiat earth effect is a necessary step in the InSAR processing. It makes the phase of interferogram exhibit the contour line of terrain and makes the unwrapping processing easily. In this paper, the reasons to form the horizontal round effect of interference pattern in InSAR imaging technology were discussed, and the common methods of eliminating the horizontal ground effect were explained suitable..Especially, the frequency shift method was introduced because it is easy to implement. A high accurate algorithm to obtain a precision result based on frequency shift and linear interpolation technology was proposed. The interferogram after earth fiat removal can show the geometry directly and greatly reduce the number of the phase residual. The actual data shows the feasibility and validity of the algorithm in the processing.
InSAR interference image flat earth removal interpolation
Peng Shurong He Kexue Wang Yaonan Lu Juan Deng Jiwei Xu haixia
College of Electrical & Information Enginerring Changsha University of Science&Technology Changsha, College of Electrical & Information Enginerring Hunan University Changsha, China
国际会议
张家界
英文
742-745
2009-04-11（万方平台首次上网日期，不代表论文的发表时间）