NEST: an ESA toolbox for scientific exploitation of SAR data

Transcription

1 NEST: an ESA toolbox for scientific exploitation of SAR data M.Engdahl (ESA-ESRIN), A. Minchella (RSAC c/o ESA), P. Marinkovic (Ppo.Labs), L. Veci (Array Systems Computing) 26/07/2012 IGARSS 2012 Munich

2 Contents NEST Project Overview & Context NEST Architecture NEST 4C Features Future developments for Sentinel-1

3 ESA EO User Toolboxes

4 NEST Project Overview NEST = Next ESA SAR Toolbox A free and fully open source toolbox Supports the scientific and operational exploitation (reading, processing, analysing and visualising) of ESA and 3 rd party spaceborne SAR data Project KO in November 2007, current version number is NEST 4C Supported SAR Missions ENVISAT ASAR ERS-1&2 Radarsat-2 Cosmo-SkyMed TerraSAR-X ALOS PALSAR 2013 Sentinel 1 A-B Radarsat-1 JERS SAR

5 NEST Development Team ESA Marcus Engdahl, Andrea Minchella Array Systems Computing (Prime) Rajesh Jha, Luis Veci, Jun Lu, Shengli Dai Brockmann Consult (BEAM-NEST Core) Norman Fomferra, Marco Peters PPO.labs (InSAR) Petar Marinkovic TU Delft (InSAR) Prof. Ramon Hanssen

6 NEST Users registered Users unique visitors on website Downloaded by: European Space Agency (ESA) National Aeronautics and Space Administration (NASA) Canadian Space Agency (CSA) Comisión Nacional de Actividades Espaciales (CONAE) Deutsches Zentrum für Luft- und Raumfahrt (DLR) Nansen Environmental and Remote Sensing Centre (NERSC) National Oceanic and Atmospheric Administration (NOAA) US Naval Research Laboratory (NRL) Jet Propulsion Laboratory (JPL) Alaska SAR Facility (ASF) Canadian Centre for Remote Sensing (CCRS) Canadian Forest Service (CFS) Geological Survey of Canada (GSC) Parks Canada Agency (PCA) Geoscience Australia Instituto Nacional de Técnica Aerospacial (INTA) National Space Research and Development Agency (NASRDA) SPOTIMAGE INFOTERRA VTT Technical Research Centre of Finland EU Joint Research Centre (JRC) Norsk Polarinstitut Many universities worldwide + Many more...

7 NEST Architecture NEST is built re-using the proven BEAM Earth Observation Toolbox and Development Platform ( Reduced development cost Development synergy thanks to the shared NEST-BEAM Core plug-in modules for both toolboxes are largely interchangeable. Easy expandability (BEAM processors, Radarsat-Toolbox etc.) Java implementation: guarantees platform independence and easy portability (Windows, Linux, Mac) Advanced features include: A Tiled memory model Multi-core processor support A pull-processing architecture Modular design (plugins)

8 NEST Architecture: data flow Display and Analysis Tool (DAT) Integrated graphical user interface for SAR data visualisation, analysis and processing ENVISAT ASAR ERS-1&2 Radarsat-2 Cosmo-SkyMed TerraSAR-X ALOS PALSAR Readers Generic Product Model (GPM) NEST-BEAM core Writers Beam dimap Geotiff Netcdf Envi Generic Binary Radarsat-1 Google Earth JERS SAR Graph Processing Tool (GPT) For command line execution of user-defined batch processing chains

9 NEST 4C: Display and Analysis Tool (DAT) Products View Projects View Pixel image information Metadata/header Statistics R.O.I. Tool Navigation Colour (LUT) Management Layer Management (Image & shape overlay) World Maps (NASA WorldWind integration) Flexible windows management

10 NEST 4C: Graph Processing Tools Create your own processing chains & save in XML Visual Graph Processing Framework interface Executed from command line or from GUI Allows for batch processing on stack of images Very useful for large-scale operational processing

11 NEST 4C: Readers SAR data readers Common EO formats Compatibility with other software ENVISAT ASAR GeoTiff Envi ERS-1&2 HDF 4 & 5 PolSARpro ALOS PALSAR NetCDF BEAM Radarsat-1&2 Generic Binary TerraSAR-X Cosmo- SkyMed JERS SAR

12 NEST 4C: The Product Library Convenient browsing and importing of products with product information and previews. Import to a project Apply batch processing chain

13 NEST 4C: Utilities ERS & ASAR precise orbit handling (Delft, ESA Doris and Prare orbits) Band Arithmetic Data Conversion Subset and Resampling Metadata inspection and replace Image Filtering Create layers stack Image Analysis - Principle Component Analysis - EM Cluster Analysis (Beam tool) - KMeans Cluster Analysis (Beam tool)

14 NEST 4C: SAR Tools* Absolute calibration (Envisat ASAR, ERS 1&2, ALOS, Radarsat-2, TerraSAR-X, Cosmo-SkyMed) Coregistration of detected and complex products Multilooking Speckle filtering (single and multitemporal filtering) Debursting of ASAR WSS * Level of support depends on sensor & product type please refer to NEST documentation for full details

15 NEST 4C: Geometry Range-Doppler Terrain Correction (backward geocoding) Simulated SAR Terrain Correction with GIM mask Radiometric normalization during Terrain Correction Ellipsoid correction Map Reprojection Mosaicking DEM tools

16 NEST 4C: InSAR Algorithmic integration of DORIS (TU Delft Radar Interferometric Software) A fully integrated and featured InSAR processor within NEST Coregistration and resampling DEM assisted coregistration Products: interferogram and coherence Filtering: both spectral and phase Geo-coding Unwrapping via 3 rd party sw DEM product Available in 4B Available in 4C-1.0 (Summer 2012) Differential InSAR Only zero doppler and strip map data are fully supported

17 Future Developments (for Sentinels) Background BEAM-NEST to be the development starting-point for image-data Sentinel toolboxes development starts in 2013 Development contract to be awarded in open competition Sentinel challenges Huge data products (up to hundreds of GB per data-take) New observation modes (S-1 TOPS) Frequent observations over area of interest (large image stacks) New developments for S-1 Product assembly tool (from 2GB slices) Product re-noising and de-noising tools Product mosaicking tool (from bursts) TOPS-mode support TOPS co-registration Spectral diversity method (?) Azimuth phase-ramp correction TOPS InSAR Spectral filtering in azimuth (time-varying doppler)

18 Further information For software upgrades, documentation, discussion forum and more information regarding the NEST project, please visit our website at