Title :
Verification of phase unwrapping using topographic maps
Author :
Xu, Wei ; Cumming, Ian
Author_Institution :
Dept. of Electr. & Comput. Eng., British Columbia Univ., Vancouver, BC, Canada
Abstract :
To verify InSAR phase unwrapping under various complicated types of topography, simulated InSAR data is not sufficient. To use real InSAR data in verification of phase unwrapping, InSAR images should be properly registered to accurate topographic maps. By using a 2-step registration, the 2-dimensional registration of SAR images can be implemented as two 1-dimensional registrations. The resultant registration can be as accurate as one pixel. After registration, topographic maps can be used to verify the InSAR phase unwrapping
Keywords :
geophysical signal processing; geophysical techniques; image registration; radar imaging; remote sensing by radar; spaceborne radar; synthetic aperture radar; topography (Earth); 2-step registration; InSAR; complex topography; geophysical measurement technique; image registration; interferometric SAR; land surface topography; phase unwrapping; radar imaging; radar remote sensing; spaceborne radar; synthetic aperture radar; terrain mapping; topographic map; verification; Azimuth; Computational modeling; Computer simulation; Digital elevation models; Geometry; Linear approximation; Orbits; Solid modeling; Surface topography; Synthetic aperture radar interferometry;
Conference_Titel :
Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4403-0
DOI :
10.1109/IGARSS.1998.702804
