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Questions related from Reda Fekry Khaliel
In DEM generation from ERS-2 Tandem SAR data, and after obtaining the unwrapped phase it is easy to get the height above reference ellipsoid (e.g. WGS84) what is the accuracy of the resulting...
13 March 2016 9,298 3 View
as mentioned in Fialko 2001 for 3 D displacement from InSAR, a linear system of equations should be solved for each pixel : 1.Two equations from Ascending and Descending Orbits [Un Sin φ – Ue Cos...
15 November 2015 2,600 3 View
To resolve 3 D Surface displacement from DInSAR it is required to know the incidence angle at each target pixel and the azimuth of the satellite heading vector clock wise positive from north to...
11 October 2015 2,915 4 View
DInSAR produces the surface displacement in only the direction of radar line of sight (LOS) then, how to resolve this vector in the three dimensions East-West, North-South, and Up-down (vertical)...
19 September 2015 7,111 1 View
for Interferometric SAR Digital Elevation Model generation, after phase to height conversion the resulting heights are ellipsoidal but the elevations of spot heights from topographic map are...
10 September 2015 9,432 2 View
There are two ways for interferometry a. apply an external DEM like SRTM b. Apply a third SAR image to an interferometric pair if an External DEM is applied with low accuracy about ten meters or...
26 August 2015 4,583 1 View
A differential interferogram (DInSAR) can be composed if the phase of one interferogram is subtracted from the phase of another interferogram "DEM" so that the remaining contributions in the phase...
20 August 2015 2,309 3 View
After forming an interferogram and correct it for phase and apply a DEM to remove the topographic noise now it can be called "DInSAR" which is used for crustal displacement How to create...
17 August 2015 9,549 5 View
I need to generate a DInSAR to study the surface displacement In NEST, It is required to create first two pairs: 1. TOPO pair 2. DEFO pair The information mentioned in the user manual is not...
24 June 2015 8,904 1 View
In NEST-DORIS software How to produce three pass interferometry "DInSAR" I need further information than existing in the software user manual
21 April 2015 2,676 4 View
phase to height conversion tool in NEST toolbox
27 March 2015 7,339 7 View
For the same geographical position I obtained Three elevations from three different sources of DEMs For InSAR DEM: Lat ; 24.29248762 Long 32.2634383 Elev: 92.193 M For ASTER : Long;...
21 March 2015 5,772 3 View
what is the greatest error in InSAR DEM generation that may cause fatal error in elevations?
21 March 2015 2,501 3 View
I have produced Digital Elevation Model from tandem pairs of ERS 1&2. When I compared the results with ASTER and SRTM, the difference produced was very large. For what reason this difference...
19 March 2015 9,307 6 View
InSAR DEM. Thanks in advance for your replies.
19 March 2015 8,601 3 View
Is there a program converted the EGM96 spherical harmonic coefficient set to their ellipsoidal harmonic coefficient counterpart? I'm looking for a program to converted spherical harmonic...
13 March 2015 9,096 3 View
In geodetic applications, how can one use differential interferometry for crustal displacement monitoring?
01 March 2015 6,398 3 View
I use NEST software From ESA "https://earth.esa.int/web/guest/home;jsessionid=9944AA626F7C6F2942DD3DC2027427BC.eodisp-prod4040" for DInSAR processing but I encountered some problems in Phase...
24 February 2015 5,473 7 View
After forming an interferogram, phase filtering and phase unwrapping. The interferogram is geocoded. Now, how can I extract displacement information from the produced interferogram?
23 February 2015 2,972 7 View
