Combination of interferograms from ascending and descending orbits

Author

Pasquali, P. ; Pellegrini, R. ; Prati, C. ; Rocca, F.

Author_Institution

Dipartimento di Elettronica a Inf., Politecnico di Milano, Italy

Volume

2

fYear

1994

fDate

8-12 Aug. 1994

Firstpage

733

Abstract

SAR interferometry can be usefully exploited for generating elevation maps. A problem derives from the image deformation due to the SAR geometry. As the terrain slope along range approaches the off-nadir angle (foreshortening areas), no elevation information can be extracted. However, if ascending and descending passes are considered, terrain coverage is increased. Those areas affected by foreshortening in one image are well covered (if not in shadow) in the other image.

Keywords

cartography; geodesy; geophysical techniques; radar applications; radar imaging; remote sensing by radar; spaceborne radar; synthetic aperture radar; topography (Earth); SAR geometry; SAR interferometry; ascending orbit spaceborne radar; descending orbit; elevation map; foreshortening; geophysical measurement technique; image deformation; interferogram combination; land surface topography; off-nadir angle; radar imaging; radar remote sensing; synthetic aperture radar; terrain coverage; terrain mapping; terrain slope; Azimuth; Data mining; Geometry; Interferometry; Orbits; Pain; Volcanoes;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1994. IGARSS '94. Surface and Atmospheric Remote Sensing: Technologies, Data Analysis and Interpretation., International

Print_ISBN

0-7803-1497-2

Type

conf

DOI

10.1109/IGARSS.1994.399244

Filename

399244