|
|
- 2018
共享内存环境下的大块干涉相位图解缠算法
|
Abstract:
针对大块干涉相位图解缠效率低的问题，提出了一种共享内存环境下的大块干涉相位图解缠方法。利用质量引导和最小不连续优化策略设计了复合相位解缠算法，并在共享内存环境下对算法中的质量图计算、高低质量区域分割和低质量区域优化3个步骤进行了并行化。为充分利用多核计算资源，针对低质量区域的并行优化，设计了动态计算任务分配方法。对仿真和干涉合成孔径雷达相位图的解缠试验结果表明，所提算法在提高相位解缠精度的同时，也极大地优化了相位解缠效率
| [1] | Zhong Heping, Tang Jinsong, Zhang Sen, et al. A Fast Phase Unwrapping Algorithm Based on Quantized Quality Map and Priority Queue[J]. Geoma-tics and Information Science of Wuhan University, 2011, 36(3):342-345(钟何平,唐劲松,张森,等.利用量化质量图和优先队列的快速相位解缠算法[J]. 武汉大学学报·信息科学版,2011,36(3):342-345) |
| [2] | Zheng D L,Da F P.A Novel Algorithm for Branch Cut Phase Unwrapping[J].Optics and Lasers in Engineering,2011,49(5):609-617 |
| [3] | Chen C W.Statistical-Cost Network-Flow Approaches to Two-Dimensional Phase Unwrapping for Radar Interferometry[D].California:Stanford University,2001 |
| [4] | Zhang K, Ge L, Hu Z, et al. Phase Unwrapping for very Large Interferometric Data Sets[J]. IEEE Transactions on Geoscience and Remote Sensing, 2011, 49(10):4048-4061 |
| [5] | Flynn T J. Two-Dimensional Phase Unwrapping with Minimum Weighted Discontinuity[J]. Journal of the Optical Society of America A,1997,14(10):2692-2701 |
| [6] | Ghiglia C D,Pritt D M.Two-Dimensional Phase Unwrapping:Theory, Algorithm and Software[M].New York:John Wiley & Sons Inc,1998 |
| [7] | Chen Qiang, Yang Yinghui, Liu Guoxiang, et al. InSAR Phase Unwrapping Using Least Squares Method with Integer Ambiguity Resolution and Edge Detection[J]. Acta Geodaetica et Cartographica Sinica,2012,41(3):441-448(陈强,杨莹辉,刘国祥,等.基于边界探测的InSAR最小二乘整周相位解缠方法[J]. 测绘学报,2012,41(3):441-448) |
| [8] | Chen C W,Zebker H A.Phase Unwrapping for Large SAR Interferograms:Statistical Segmentation and Generalized Network Models[J].IEEE Transactions on Geoscience and Remote Sensing,2002,40(8):1709-1719 |
| [9] | Carballo G F.Statistically-Based Multiresolution Network Flow Phase Unwrapping for SAR Interferometry[D].Sweden:Kungliga Tekniska Hogskolan,2000 |
