一种新的InSAR区域增长相位解缠算法  

A New Region- growing Algorithm for InSAR Phase Unwrapping

作　　者：陈刚[1,2] 刘志铭[1,2] 张笑微[1,2] 

机构地区：[1]西安测绘研究所,陕西西安710054 [2]地理信息工程国家重点实验室,陕西西安710054

出　　处：《测绘科学与工程》2016年第1期25-30,共6页Geomatics Science and Engineering

摘　　要：传统区域增长算法通过多路径预测来保证解缠的稳定性，但在噪声区域，解缠结果存在跳变现象。本文提出了一种新的区域增长相位解缠算法，通过低相干区域识别对噪声区域进行屏蔽，避免积分路径穿过该区域；通过分层质量引导，确保相位解缠路径从高质量区域逐步向低质量区域扩展；通过对未解缠区域进行相位插值，提高数据的可利用率。试验结果表明，本文提出的算法在保证相位解缠稳定性的同时，提高了相位解缠的可解缠率。Traditional region -growing algorithm for InSAR phase unwrapping uses multi -path prediction to maintain sta- bility, hut jomping phenomenon still exists in noisy areas. In this paper, a new region -growing algorithm applying low -degree coherence region identification is put forward to block noisy area and keep the integrated path away from the area. Hierarchical quality guidance is provided to ensure that the unwrapping path will extend from high quality area to low quality area. The availability of data is improved by conducting phase interpolating in unwrapping area. The airborne InSAR test result shows that the algorithm will maintain the stability and improve the availability of phase unwrapping at the same time.

关 键 词：干涉合成孔径雷达 区域增长 相位解缠 

分 类 号：P223[天文地球—大地测量学与测量工程]