The European Space Agency is making NEST available free of charge to the user community


NEST is moving to its new home at


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, RADARSAT1&-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 (jLinda) for Strimap and Zero-Doppler focused data
  • Compatibility with PolSARpro Toolbox  (Reader, Writer)

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.

Please sign in or create an account to download the software for free

Frequently Asked Questions

Please join the new NEST forum here


Please add the Processed by NEST logo in the corner of images in your papers and posters. Thank you.