噪声消除算法在干涉SAR相位解缠中的应用研究  

A Research on the Noise-Immune Algorithm for the Phase Unwrapping of InSAR Data

作　　者：边勇[1] 周荫清[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100083

出　　处：《电子学报》2003年第z1期2021-2025,共5页Acta Electronica Sinica

摘　　要：本文把噪声消除算法应用在干涉SAR相位解缠中 ,分析了该算法的特点 .为了更好地解缠干涉SAR数据 ,提出了一种改进的方法 .在原有两点规则的基础上 ,提出了三点规则 ,并提出把两点规则和三点规则结合使用来提高相位解缠稳健性的混合算法 .该方法有效地解决了噪声消除算法在解缠质量差干涉相位图时不收敛的问题 ,在保持了算法的计算精度的同时提高了算法的稳健性 .The Noise-immune algorithm is applied to unwrap the InSAR data.The characteristic of the Noise-immune algorithm is analyzed.In order to get a better result in the unwrapping of the InSAR data using the Noise-immune algorithm,a refinement is presented.Based on the two-point criterion,the three-point criterion is presented.In order to improve the stability of phase unwrapping,we present a hybrid algorithm which is formed by combining the two-point criterion and three-point criterion.When unwrapping the interferogram of bad quality,the two-point method may be not convergent,the hybrid algorithm can solve this problem.The hybrid algorithm can improve the stability of phase unwrapping without losing the accuracy.The computer simulation result of the simulated data and true InSAR data proves the validity of our algorithm.

关 键 词：噪声消除算法 干涉SAR 相位解缠 

分 类 号：TN95[电子电信—信号与信息处理]