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v0.4 - Alpha

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@alexamici alexamici released this 08 Mar 08:01
· 236 commits to main since this release
66c00a5

What's new:

  • Fixed chunking of measurement data
  • Added a helper functions for simple operations involving metadata
  • Start adding metadata to variables

Overview:

Overall the software is in the alpha phase and the usual caveats apply.

  • supports the following data products as distributed by ESA:
    • Sentinel-1 Ground Range Detected (GRD):
      • Stripmap (SM)
      • Interferometric Wide Swath (IW)
      • Extra Wide Swath (EW)
    • Sentinel-1 Single Look Complex (SLC) SM/IW/EW
  • creates ready-to-use Xarray Datasets that map the data lazily and efficiently in terms of both memory usage and disk / network access
  • reads all SAR imagery data: GRD images, SLC swaths and SLC bursts
  • reads several metadata elements: satellite orbit and attitude, ground control points, radiometric calibration look up tables, Doppler centroid estimation and more
  • reads uncompressed and compressed SAFE data products on the local computer or on a network via fsspec - depends on rasterio>=1.3a3
  • supports larger-than-memory and distributed data access via Dask and rioxarray / rasterio / GDAL
  • provides a few helpers for simple operations involving metadata like croppping individual bursts out of IW SLC swaths applying radiometric calibration polynomials and converting slant to ground range for GRD products