It can effectively work in the areas with low SNR. The filtered interferogram is weighted to weaken the mosaic effect.

其中提出的基于PD算子的滤波算法，使用PD算子估计干涉图大数据块的相位多项式模型系数，来提高算法对低信噪比数据的处理能力，并对滤波后的干涉图作加权处理来削弱马赛克效应。

By researching the origin, characteristic of the InSAR interferogram noise and statistical characteristic of phase, the advantage and disadvantage of traditional interferogram filtering methods are analyzed based on experiment results.

论文在研究InSAR干涉纹图噪声来源、特性和相位的统计特征的基础上,基于实验结果的基础上分析了传统的干涉纹图滤波方法的优缺点。

Especially we dicuss how to deal with the phase-shifting cell (PZT) and interferogram.

从工程化的角度对系统优化和改善，提出一些实效的方法，特别是移相器和干涉图处理。