A new method for estimating unambiguous phase observations of re-identified coherent targets for multi-baseline InSAR techniques

作者：Zhang, Kui; Wu, Di^*; Wang, Shu; Song, Ruiqing; Meng, Guojie

来源：Remote Sensing Letters, 2017, 8(12): 1172-1179.

DOI：10.1080/2150704X.2017.1353223

• INTERFEROMETRY

In order to improve the density of multi-baseline differential interferometric synthetic aperture radar (DInSAR) measurements, a coherent target re-identification process is required to be carried out. After this process, the number of coherent targets may remarkably increase, which is harmful to subsequent phase unwrapping process. In this letter, a new method is proposed to estimate unambiguous phase observations of additional coherent targets. Unlike that the traditional method conducts phase unwrapping in a global sense, it retrieves unambiguous phase observations independently. Thanks to this nature, the proposed method can be implemented in parallel and can effectively suppress phase unwrapping tiling artifacts. Using Sentinel-1 data, the efficiency and the effectiveness of the proposed method is confirmed.

• 出版日期2017
• 单位中国地震局地震预测研究所; 重庆大学