结合频率估计的InSAR区域增长相位解缠方法

提出一种结合频率估计的InSAR区域增长相位解缠方法。利用最大似然频率估计方法，估计出局部频率和已展开的相位共同线性，预测出局部区域中心点的展开相位，整体上采用区域生长策略，在质量图的引导下按照从高质量区域到低质量区域的顺序进行积分，可以有效地减小误差传递，较大程度地提高了相位展开结果的精度。数据实验结果验证了这种合成算法的有效性。

A Region-growing Phase Unwrapping Approach Combining Local Frequency Estimation for Insar

This paper presents a region-growing phase unwrapping approach.The unwrapped phase at the central pixel of a local image is obtained by fitting unwrapped phases with an ideal plane assumed,with local frequencies estimated by the maximum likelihood(ML)estimator.A region-growing strategy is taken,in which a quality map guides the phase unwrapping from high-quality pixels to low-quality pixels,minimizing the propagation of errors.Experiment results prove the validity of this approach.