A generic differential interferometric SAR processing system, with applications to land subsidence and snow-water equivalent retrieval

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A generic differential interferometric SAR processing system, with applications to land subsidence and snow-water equivalent retrieval

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by Yngvar Larsen , Geir Engen , Tom Rune Lauknes , Eirik Malnes , Kjell Arild Høgda

Venue:	Proc. Fringe 2005 Workshop, ESA ESRIN
Citations:	4 - 3 self

Citations

80	The wavenumber shift in SAR interferometry,” - Gatelli, Guarnieri, et al. - 1994 (Show Context) Citation Context ...ase component due to topography (if an external DEM is available) as outlined in [1]. The gsar azimuth matcher and the gsar range matcher filters out the nonoverlapping bandwidth in azimuth and range =-=[3]-=-, respectively. Finally, the interferogram itself is formed by gsar interferogram, which upsamples the two SLC channels, multiplies, and finally applies a lowpass filter before downsampling in order t...
44	Crossed orbit interferometry: Theory and experimental results from SIR-B,” - Gabriel, Goldstein - 1988 (Show Context) Citation Context ... common to all channels, and then finds the average pixel shift between the master channel (usually channel 0, but configurable) and each of the other channels (slaves) by cross-correlation, see e.g. =-=[2,4]-=-. The calculated shift is very accurate since it is averaged over a lot of estimation windows distributed across the entire scene. No ground control points are needed. Since we use an orbit propagator...
38	The Chirp Z Transform Algorithm,” - Rabiner, Schafer - 1969 (Show Context) Citation Context ...geometry. This is done by modeling the variation in subpixel shift across the scenes as linear in azimuth and range, estimating the rates of change, and correcting for these using a chirp-z transform =-=[7]-=-. The factor in azimuth direction is expected to be very small, and may be skipped by setting a flag with set, but the effect in range may be significant in some cases. The optional gsar precision orb...
15	Efficient simulation of SAR interferograms of large areas and of rugged terrain - Eineder - 2003 (Show Context) Citation Context ...tion chain described above (slower). The gsar phase compensator removes the flat earth phase and the interferometric phase component due to topography (if an external DEM is available) as outlined in =-=[1]-=-. The gsar azimuth matcher and the gsar range matcher filters out the nonoverlapping bandwidth in azimuth and range [3], respectively. Finally, the interferogram itself is formed by gsar interferogram...
7	Geocoding of fast-delivery SAR image mode product using DEM data - Johnsen, Lauknes, et al. - 1995 (Show Context) Citation Context ..., and one class gsar transformer which inherits gimf transformer, and in addition implements the SAR specific parts, including the interface to an orbit propagator, as well as geocoding functionality =-=[4]-=-. This functionality includes • A method getStateVector that interfaces a properly initialized orbit propagator (or possibly interpolates precalculated statevectors if available). • A method getGeomet...
2	Retrieval of snow water equivalent with Envisat ASAR in a Norwegian hydropower catchment - Larsen, Malnes, et al. - 2005 (Show Context) Citation Context ...show the results from using GSAR processed interferograms for retrieval of SnowWater Equivalent (SWE) from ENVISAT ASAR data near a catchment for a hydropower dam in Northern Norway. For details, see =-=[5]-=-. SWE retrieval is of key interest in the hydropower industry. Currently, expensive and time consuming manual measurement campaigns are used, and the coverage is naturally not good. Thus, SWE retrieva...
1	A comparison of - Lauknes, Dehls, et al. - 2005 (Show Context) Citation Context ...dence in Oslo, Norway, 1992-2000. Fig. 4 shows results from applying the Small Baseline Subset technique to a stack of GSAR processed ERS interferograms from Oslo, Norway, 1992-2000. For details, see =-=[6]-=-. Note in particular the highly nonlinear behavior of the deformation time series in the rightmost panel. This is due depletion of ground water caused by the construction of a tunnel for the airport t...