Title :
An iterative method for phase unwrapping with adaptive weights estimation
Author :
Mori, Alessandro
Author_Institution :
Dipt. Ingegneria Elettronica, Univ. degli Studi di Firenze, Italy
Abstract :
Extraction of topographic digital elevation model (DEM) by interferometric data requires recovering of interferometric phase value from its principal value (measured). This is carried out by phase unwrapping algorithms. The author proposes an iterative weighted least square phase unwrapping, where weights are estimated directly from input interferometric phase. Some simulations have shown that they can adequately locate critical areas in the input interferogram
Keywords :
geophysical techniques; radar theory; remote sensing by radar; synthetic aperture radar; terrain mapping; topography (Earth); DEM; InSAR; SAR; adaptive weights estimation; algorithm; digital elevation model; geophysical measurement technique; input interferogram; interferometric SAR; iterative method; land surface; phase unwrapping; radar remote sensing; synthetic aperture radar; terrain mapping; topography; weighted least square; Frequency; Image sensors; Interpolation; Iterative methods; Least squares approximation; Least squares methods; Multigrid methods; Phase estimation; Phase noise; Surfaces;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International
Conference_Location :
Hamburg
Print_ISBN :
0-7803-5207-6
DOI :
10.1109/IGARSS.1999.774627
