一种新的INSAR相位解缠方法  

Phase Unwrapping Method for INSAR

作　　者：孙学宏[1,2,3] 于向明[1,2] 刘丽萍[1,2] 曾志民[3] 张成[1,2] 

机构地区：[1]宁夏大学物理与电子电气工程学院,银川750021 [2]宁夏沙漠信息智能感知重点实验室,银川750021 [3]北京邮电大学信息与通信工程学院,北京100876

出　　处：《北京邮电大学学报》2016年第2期10-14,34,共6页Journal of Beijing University of Posts and Telecommunications

基　　金：宁夏自然科学基金项目(NZ14045);国家自然科学基金项目(61461044)

摘　　要：针对Goldstein枝切线法存在的问题,根据残差点的分布特点,提出了一种新的干涉合成孔径雷达相位解缠方法.该方法首先对邻近偶极子对进行预处理,生成独立且长度很短的枝切线,使用自适应遗传模拟退火算法计算剩余正负残差点的优化组合,不仅在短时间内设置出总体长度较短的枝切线,且有效地避免了大面积"孤岛"出现.实验结果表明,相比于几种典型的相位解缠算法,该方法在时间和精度上具有优越性.Due to disadvantages of Goldstein＇s branch cut algorithm,a new phase unwrapping method for interferometric synthetic aperture radar（ INSAR） was proposed according to distribution characteristics of residue. Firstly,the neighbor dipoles preprocessing algorithm was performed to establish independent and short branch cuts. Secondly,the adaptive genetic simulated annealing algorithm was performed to calculate optimized combination of remaining residues. Ultimately,the branch cuts with short length was generated in a short time,and large ＂isolated island＂phenomenon was avoided. Experiment shows that the proposed method has advantages in precision and operation time compared with some typical phase unwrapping algorithm.

关 键 词：干涉合成孔径雷达 相位解缠 枝切线 遗传算法 模拟退火算法 

分 类 号：TN957.52[电子电信—信号与信息处理]