4. Experimental Results and Analysis Firstly, we generated 98 interferograms using a single master SAR image. Subsequently, the temporal coherence is used to identify 15,708 candidate pixels [11] and construct redundant observation networks. To avoid pixel isolation, we set a KNN threshold of 15,708 pixels to create redundant networks for optimizing the phase unwrapping process. Next, we estimated the temporal coherence of each arc, and its statistical histogram is presented in Figure 3A.