Modified four-pass differential SAR interferometry for estimating mountain glacier surface velocity fields
نویسندگان
چکیده
منابع مشابه
Measuring rock glacier surface deformation using SAR interferometry
The detection and quantification of surface deformation of an active rock glacier using the differential SAR interferometry technique is presented. An average deformation rate of 6 mm/35 days in the radar line-of-sight in the summer of 1992 was estimated. The maximum deformation rate was located at the upper part of the rock glacier and amounts to 18 mm/35 days. In contrast, at the snout of the...
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Differential SAR interferograms were computed over the Swiss Alps with ERS-1/2 Tandem data acquired between 1995 and 2000 from ascending and descending orbits and use of an external Digital Elevation Model (DEM). Comparison with the Swiss glacier inventory 2000 shows that winter interferograms with one day time interval have a generally high degree of coherence and are straightforward to identi...
متن کاملNormal and Differential SAR Interferometry
Wolfgang Keydel Microwaves and Radar Institute German Aerospace Research Centre (DLR), Oberpfaffenhofen Contact Address: Mittelfeld 4 D-82229 Hechendorf Germany E-mail: [email protected] Abstract SAR Interferometry explores the height structure inside a Radar pixel. Two antennas separated with a so called baseline distance B in cross velocity direction take two independent images from the...
متن کاملIntegrated Data Processing Methodology for Airborne Repeat- Pass Differential Sar Interferometry
Short temporal baseline and multiple ground deformation information can be derived from the airborne differential synthetic aperture radar Interforemetry (D-InSAR). However, affected by the turbulence of the air, the aircraft would deviate from the designed flight path with high frequent vibrations and changes both in the flight trajectory and attitude. Restricted by the accuracy of the positio...
متن کاملMethods and performances for multi-pass SAR Interferometry
Thanks to the several space missions accomplished since ERS-1, the scientific community has been provided with a huge amount of data suitable for interferometric processing. The innovation was the availability of multiple compatible images of the same areas. Such images, achieved by looking from slightly different point of view different orbits, and/or by different frequencies, and/or at differ...
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ژورنال
عنوان ژورنال: Remote Sensing Letters
سال: 2015
ISSN: 2150-704X,2150-7058
DOI: 10.1080/2150704x.2015.1094588