Removal of residual errors from SAR-derived digital elevation models for improved topographic mapping of low-relief areas

Author

Slatton, K. Clint ; Crawford, Melba M. ; Gibeaut, James C. ; Gutierrez, Roberto

Author_Institution

Center for Space Res., Texas Univ., Austin, TX, USA

Volume

1

fYear

1997

fDate

3-8 Aug 1997

Firstpage

457

Abstract

Interferometric synthetic aperture radar data can be used to precisely map topography, but low-relief areas are problematic because errors in the data can be large compared to the topographic variations. The NASA/JPL TOPSAR system acquired data over a low-relief test site on the Texas coast in 1996. Due to unusually high turbulence during the acquisition and the mild topography, residual height errors were visible in the digital elevation model (DEM). Characteristics of the error signal are described and a method is outlined for removing the residual error and mosaicking the affected TOPSAR frames

Keywords

geodesy; geophysical signal processing; geophysical techniques; radar imaging; remote sensing by radar; spaceborne radar; synthetic aperture radar; topography (Earth); DEM; NASA JPL TOPSAR; SAR; SAR interferometry; Texas; USA; digital elevation model; geodesy; geophysical measurement technique; image processing; improved topographic mapping; land surface topography; low-relief area; mosaicking; radar imaging; radar remote sensing; residual error removal; residual height errors; spaceborne radar; synthetic aperture radar; terrain mapping; Digital elevation models; Floods; Geology; Land surface; Optical interferometry; Predictive models; Space technology; Spaceborne radar; Surface topography; Synthetic aperture radar interferometry;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IGARSS.1997.615914

Filename

615914