The document discusses DIAPASON, a DInSAR software used for generating differential interferograms on the Geohazard Exploitation Platform (GEP). It provides an overview of DIAPASON processing services for ERS, ENVISAT, and Sentinel-1 SAR data on GEP. It also demonstrates example interferograms generated on GEP for earthquakes in Japan and New Zealand, and describes future plans to add persistent scatterer interferometry capabilities with the FASTVEL service.

1. GEP Diapason services for differential
interferograms generation
Pablo Blanco, Rubén Iglesias
pablo.blanco@tre-altamira.com
tre-altamira.com | © TRE ALTAMIRA 2016

2. CRL-GEP meeting Hands on GEP 31 March 2017
» GEOHAZARDS EXPLOITATION PLATFORM GEP
» DIAPASON in GEP
» Hands on
» FastVel Service on GEP
Outline
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» GEP brings the user closer to the data, offering new services for product generation.
» The Geohazard platform is sourced with elements – data, tools, and processing
including InSAR – relevant to the Geohazard theme and related exploitation scenarios.
The Geohazard Exploitation Platform (GEP)
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Processing
Services
Data
Archives
Cloud
computing
DIAPASON &
PSI processing
chain

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DIAPASON DInSAR software
DIAPASON services for ERS, ENVISAT and Sentinel-1 SAR data
Input parameters

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High level flow chart DIAPASON processing
chain adaptation (recent update)
Main updates developed for Sentinel-1 data
processing for SM, IW and EW modes
 Data reader: adaptation to new data formats,
new image parameters
 Coregistration: Major improvements to update
the methodology* for very high coregistration
accuracy (1/1000 pixels to have a continuous phase
in the interferometric product)
 InSAR generation: New steps for image
debursting and mosaicking
 Geocoding: No major improvements required
Data Reader
InSAR generation
Coregistration
Geocoding
GEOCODED InSAR Phase,
coherence, amplitude
SAR SLC PRODUCT
* P. Prats-Iraola, R. Scheiber, L. Marotti, S. Wollstadt, A. Reigber, “TOPS Interferometry with TerraSAR-X,” IEEE TGRS,
vol. 50, no. 8, 2012

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DIAPASON in GEP
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How to generate interferograms
Select master & slave
Select Polarization, AOI or full
frame and phase filtering

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DIAPASON in GEP
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How to generate interferograms
Run job and wait…

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DIAPASON in GEP
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Sentinel-1A Interferometric amplitude generated using GEP

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DIAPASON in GEP
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Sentinel-1A Interferometric coherence generated using GEP

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DIAPASON in GEP
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Sentinel-1A Differential Interferogram generated using GEP

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DIAPASON in GEP
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Download your results…

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Japan Earthquake April 2016 M7.3 Kumamoto
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Ascending Interferogram. 08/04/2016 – 20/04/2016

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Japan Earthquake April 2016
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Descending orbit 03/03/2016 – 20/04/2016

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Japan Earthquake April 2016
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Ascending Interferogram

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Japan Earthquake April 2016
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Descending orbit

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Japan Earthquake April 2016
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Ascending LOS motion map
Ascending orbit
08/04/2016 – 20/04/2016
+80 cm-80 cm 0
Line Of Sight
Vertical
N
EastE
V

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Japan Earthquake April 2016
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Descending LOS Motion Map
Descending orbit
03/03/2016 – 20/04/2016
Vertical
N
E
V
East
+80 cm-80 cm 0
Line Of Sight

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» Master
https://catalog.terradue.com//sentinel1/search?format=json&uid=S1A_IW_SLC__1SSV
_20161103T072220_20161103T072250_013774_0161F9_2F68
» Slave
https://catalog.terradue.com//sentinel1/search?format=json&uid=S1A_IW_SLC__1SD
V_20161115T072214_20161115T072244_013949_016775_84CF pol VV psfiltx 0.5
unwrap false
Hands on
Kaikoura New Zealand 14/Nov/2016
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» Master
https://catalog.terradue.com//sentinel1/search?format=atom&uid=S1A_IW_SLC__1SS
V_20160408T091355_20160408T091430_010728_01001F_83EB slave
» Slave
https://catalog.terradue.com//sentinel1/search?format=atom&uid=S1A_IW_SLC__1SS
V_20160420T091355_20160420T091423_010903_010569_F9CE pol VV psfiltx 0.5
unwrap true
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Hands on
Kumamoto Japan 16/apr/2016

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Future Work: GEP TRE-ALTA PSI Service
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FASTVEL service
• Mean velocity
• 40 x 40 m spatial
resolution
• Raster and Shape-File
results can be
downloaded
FASTVEL

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