Occupation nocturne...
Project Manager at Centre Spatial de Liege - Belgium
Author of the #AMSTerEngine, an open source command line #InSAR processor
https://orcid.org/0000-0002-8354-100X
Dominique Derauw
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- 111 Posts
And here are my very first results with these new #NASA #NISAR data.
I had to debug a few my NISAR data reader to correctly read the frequencyB layer.
Now it is working.
Here are both frequency A and B differential interferograms on Ethiopia showing the November 2025 volcanic eruption.
This is not a #NISAR interferogram but....
It is issued from the available #NISAR sample data set made from #ALOS 2 #SAR acquisition of October 12 and November 27, 2008.
This to show to that my #NISAR data reader is now functional making the #AMSTerEngine and #AMSTer toolbox #NISAR ready!
It is issued from the available #NISAR sample data set made from #ALOS 2 #SAR acquisition of October 12 and November 27, 2008.
This to show to that my #NISAR data reader is now functional making the #AMSTerEngine and #AMSTer toolbox #NISAR ready!
I just made this differential interferogram issued from an #ESA #COPERNICUS #Sentinel1C - #Sentinel1A pair of April 2 and March 27 acquisitions showing the effect of the dramatic #Myanmar #earthquake of March 28.
Fringe density is incredibly high along the fault. About 250km of the fault were catch by these acquisitions.
Differential fringe structure is unusual and reminds those observable on glacier displacements or along ice-shelves grounding lines.
Fringe density is incredibly high along the fault. About 250km of the fault were catch by these acquisitions.
Differential fringe structure is unusual and reminds those observable on glacier displacements or along ice-shelves grounding lines.
Still playing with newly released #Sentinel1C image.
An Extended Wide swath (EW) image was acquired on south #Groenland by #Sentinel1C on February 6, 2025.
The day before, a classical Interferometric Wide swat (IW) image was acquired by #Sentinel1A.
Both images were acquired in polarisation HH - HV.
I coregister both images like it was an interferometric #InSAR pair and make this short animation showing sea currents variation in this one-day interval.
So, my InSAR soft compliance with #Sentinel1C strip map (SM), Interferometric Wide swath (IW) and Extended Wide swath (EW) acquisition modes is now fully verified.
#AmsterToolbox (https://github.com/AMSTerUsers/AMSTer_Distribution)
GitHub - AMSTerUsers/AMSTer_Distribution: This AMSTer Software is dedicated to automatic SAR/InSAR mass processing for amplitude, coherence or deformation time series. It can also perform single interferometric tasks. It is based on C and C++ software for InSAR processing and MSBAS inversion, wrapped with bash and python scripts for automation.
This AMSTer Software is dedicated to automatic SAR/InSAR mass processing for amplitude, coherence or deformation time series. It can also perform single interferometric tasks. It is based on C and ...
Among the #Sentinel1C released images, there is a stripmap one acquired on Milano on January 18, 2025.
The day before, a TopSAR #Sentinel1A image was acquired on the same area.
I tried to play with both images despite the fact there were acquired on different mode and different polarization scheme.
Here is an RGB colour composite made of Sentinel1A VV channel and Sentinel1C HV and HH channels.
For those interested, I made a short note on this processing here :
https://www.linkedin.com/pulse/playing-sentinel1c-dominique-derauw-og7re
Playing with #Sentinel1C | Dominique Derauw
Among the first #ESA #Sentinel1C (S1C) images that were released by #COPERNICUS, there is a stripmap (SM) one acquired on Milano on January 18, 2025. The funny stuff is that an Interferometric Wide swath (IW) #Sentinel1A (S1A) image was acquired on the same area the day before.
Yesterday, it is to say less than two month after #ESA #Sentinel1C 🛰️ launch, a first release of images was made available on #COPERNICUS data space environment to allow users to test their software compatibility.
So, I tested my soft, the AMSTerEngine which is at the core of the AMSTer Toolbox for #InSAR #timeseries processing.
And here is the very first result using a #Sentinel1C - #Sentinel1A image pair acquired on January 17 and 16 respectively on Brest, France.
Consequently, AMSTer Tool box is #Sentinel1C compatible!
This is just normal since #ESA kept the same format for these new data. However, knowing from long that the only reliable stuff in computing is the on/off button, it is quite a relief.
#AMSTerToolbox is freely available here: https://lnkd.in/eGGuY3Pv
