Yan Y., Trouvé E., Pinel Virginie. (2012). Fusion of prior information and multi-scales local frequencies to facilitate D-InSAR phase unwrapping. In :
IGARSS 2012 : 2012 International Geoscience and Remote Sensing Symposium. Piscataway : IEEE, 1888-1891. IGARSS.International Geoscience and Remote Sensing Symposium, Munich (DEU), 2012/07/22-27. ISBN 978-1-4673-1160-1.
Titre du document
Fusion of prior information and multi-scales local frequencies to facilitate D-InSAR phase unwrapping
IGARSS 2012 : 2012 International Geoscience and Remote Sensing Symposium
Source
Piscataway : IEEE, 2012,
1888-1891 ISBN 978-1-4673-1160-1
Colloque
IGARSS.International Geoscience and Remote Sensing Symposium, Munich (DEU), 2012/07/22-27
In this paper, a dedicated phase unwrapping approach, taking a priori information into account and combining multi-scales local frequencies of the interferometric phase, is developed in order to get around of the discontinuity and aliasing problems. In this approach, the interferogram is characterized by local frequency of the phase. The multi-scales local frequencies of the interferometric phase are estimated and fused to the local frequency at the optimal scale. This optimal scale, the lowest resolution scale allowing phase unwrapping without aliasing problem, is determined from the a priori displacement information. The application is performed on the displacement measurement of the 2005 Kashmir earthquake. The a priori displacement information is issued from a deformation model. The advantages of this approach are highlighted by the obtained results.
