The Next ESA SAR Toolbox (NEST) is an open source (GNU GPL) toolbox for reading, post-processing, analysing and visualising the large archive of data (from Level 1) from ESA SAR missions including ERS-1 & 2, ENVISAT and in the future Sentinel-1. In addition, NEST supports handling of products from third party missions including JERS-1, ALOS PALSAR, TerraSAR-X, Radarsat-2 and Cosmo-Skymed. NEST has been built using the BEAM Earth Observation Toolbox and Development Platform.
Architecture Highlights
- ♦ Display and Analysis Tool (DAT): integrated graphical user-friendly interface
- ♦ Graph Processing Framework (GPF): user-defined processing chains
- ♦ Graphical or command-line execution
- ♦ Tiled memory management for working with very large data products
- ♦ Data abstraction models to handle all SAR missions in a common way
- ♦ Modular design for easy modifications and upgrades
- ♦ Users are able to add their own modules via APIs
- ♦ Multithreading and Multi-core processor support
- ♦ Integrated WorldWind visualisation
Main Features
- ♦ Product library for scanning and cataloging large archives efficiently
- ♦ Absolute calibration (ENVISAT ASAR, ERS 1&2, ALOS PALSAR, RADARSAT-2, TerraSAR-X, Cosmo-SkyMed)
- ♦ Multilooking & speckle (single and multitemporal) filtering
- ♦ ERS/ASAR precise orbit handling (Doris, Prare and Delft orb.)
- ♦ Automatic Coregistration of detected and complex products
- ♦ Range-Doppler and SAR Simulation Terrain Correction
- ♦ Radiometric normalization during Terrain Correction
- ♦ Ellipsoid correction, Map Reprojection, Mosaicking
- ♦ Statistics, Data Analysis and ROI tools
- ♦ Export to GeoTiff, HDF 4 & 5, NetCDF, PolSARPro, Envi formats
- ♦ Subset, Resample and Band Arithmetic
- ♦ LUT and Layer Management
- ♦ Automatic DEM download and tile selection (SRTM, ASTER, etc)
- ♦ Debursting of ASAR WSS
- ♦ Ocean tools: basic routines for oil spill detection, ship detection and wind field estimation from SAR data
- ♦ Fully integrated and featured InSAR processor (jDORIS)
NEST is being developed by Array Systems Computing Inc. of Toronto Canada under ESA Contract number 20698/07/I-LG. InSAR functionalities are being developed by PPO.labs and Delft University of Technology.
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