关键词: 干涉合成孔径雷达（InSAR）, 相位解缠, 质量图, 索引分段堆排序

Abstract: The traditional ?quality guide phase unwrapping method is unefficient because of a great deal of sort operations in the process of phase unwrapping, especially for large InSAR phase data. This paper proposes a method of index fragmentation heap sort wrapped phase unwrapping. This method puts QPDVC as quality figure in order to combine with the advantages of traditional quality figure, and uses the index fragmentation heap sort to divide large phase data into some small heaps, saving the time of adjusting to mimimum heap in sort process. Compared with traditional methods, this method improves the unwrapping accuracy and efficiency. Finally, the simulation results show that the method is effective and feasible.

Key words: Interferometric Synthetic Aperture Radar（InSAR）, phase unwrapping, quality map, index fragmentation heap sort