Verification of phase unwrapping using topographic maps

TitleVerification of phase unwrapping using topographic maps
Publication TypeConference Paper
Year of Publication1998
AuthorsXu, W., and I. Cumming
Conference NameGeoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International
Pagination77 -79 vol.1
Date Publishedjul.
Keywords2-step registration, complex topography, geophysical measurement technique, geophysical signal processing, geophysical techniques, image registration, INSAR, interferometric SAR, land surface topography, phase unwrapping, radar imaging, radar remote sensing, remote sensing by radar, spaceborne radar, synthetic aperture radar, terrain mapping, topographic map, topography (Earth), verification

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


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