Improving DEMs using SAR interferometry

Author

Seymour, Michael ; Cumming, Ian

Author_Institution

British Columbia Univ., Vancouver, BC, Canada

Volume

5

fYear

1998

fDate

6-10 Jul 1998

Firstpage

2662

Abstract

Interferometric synthetic aperture radar (InSAR) processing relies on phase unwrapping to convert phase to topographic height. Rather than processing the complete phase image to extract a digital elevation model (DEM), the authors take the approach of using existing coarse DEMs to estimate the baseline accurately and guide the phase unwrapping processing. They apply their algorithm to ERS Tandem Mission data to demonstrate a four-fold increase in DEM quality using an existing coarse DEM to aid in phase unwrapping and also to estimate the baseline

Keywords

geophysical techniques; remote sensing by radar; spaceborne radar; synthetic aperture radar; terrain mapping; topography (Earth); DEM; ERS Tandem Mission; InSAR; SAR interferometry; algorithm; baseline; digital elevation model; geophysical measurement technique; land surface topography; phase unwrapping; radar remote sensing; spaceborne radar; synthetic aperture radar; terrain mapping; topographic height; Data mining; Digital elevation models; Frequency estimation; Geometry; Image converters; Phase estimation; Satellites; Surfaces; Synthetic aperture radar interferometry; Wrapping;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International

Conference_Location

Seattle, WA

Print_ISBN

0-7803-4403-0

Type

conf

DOI

10.1109/IGARSS.1998.702312

Filename

702312