InSAR相位解缠算法的比较

相位解缠作为合成孔径雷达干涉测量(InSAR,Interferometric Synthetic Aperture Radar)中一个关键的步骤,为获取地形高程提供了基础。相位解缠的质量将直接影响着DEM生成的质量。对现有的几类算法进行实验分析,并对解缠结果的质量进行比较,分析其精确性。结果表明:统计耗费网络流算法具有较好的解缠连续性以及较高的精度,可以获得一个较优的全局解。

Comparison of InSAR Phase Unwrapping Algorithm

Phase unwrapping is one of the most crucial steps in InSAR processing, which makes people get the information of the sur-face.At the same time, the suitable phase unwrapping algorithm influences the final result, at a large degree.We used the data of I-ran to test these algorithms, and finally gave a conclusion that Snaphu algorithm makes full allowance of the information in coherence map, obtains better global optima, and has a good continuity.It also can directly process the area of interest.