Title :
Phase unwrapping by fusion of local and global methods
Author :
Reigber, A. ; Moreira, J.
Author_Institution :
Deutsche Forschungsanstalt fur Luft- und Raumfahrt e.V., Oberpfaffenhofen, Germany
Abstract :
This paper addresses a new PU algorithm based on the fusion of a region growing and an iteratively working 2D least-square PU. By the mutual support of the two algorithms it is possible to combine the advantages of both and to eliminate the errors occurring if each one is working independently. The resulting unwrapped phase is characterised by a local stability gained from the contribution of the global method as well as the global stability given by the local method. The performance of the presented PU fusion is significantly better in comparison to the performance of the conventional methods
Keywords :
geodesy; geophysical signal processing; geophysical techniques; radar imaging; remote sensing by radar; synthetic aperture radar; topography (Earth); INSAR; across track SAR interferometry; algorithm; fusion; geodesy; geophysical measurement technique; global method; interferometric SAR; iterative method; land surface topography; local method; local stability; phase unwrapping; radar remote sensing; region growing; synthetic aperture radar; terrain mapping; two dimensional method; unwrapped phase; Image reconstruction; Interferometry; Iterative algorithms; Minimization methods; Phase distortion; Phase measurement; Phase noise; Robustness; Stability; Surface topography;
Conference_Titel :
Geoscience and Remote Sensing, 1997. IGARSS '97. Remote Sensing - A Scientific Vision for Sustainable Development., 1997 IEEE International
Print_ISBN :
0-7803-3836-7
DOI :
10.1109/IGARSS.1997.615282
