Version history¶

s1etad v0.5.2 (27/07/2021)¶

Merger functions now return masked arrays.
New s1etad.product.Sentinel1EtadBurst class now has two new properties:
- s1etad.product.Sentinel1EtadBurst.vg, the average zero-Doppler ground velocity
- s1etad.product.Sentinel1EtadBurst.reference_polarization, a string identifying the reference polarization
and a new method:
- s1etad.product.Sentinel1EtadBurst.get_polarimetric_channel_offset() to get the constant time offset of a polarimetric channel w.r.t. the reference one
Support for ETAD-DLR-PS-0014 “ETAD Product Format Specification” Issue 1.5 (SETAP v1.6):
- new method ( s1etad.product.Sentinel1EtadBurst.get_timing_calibration_constants()) for retrieving timing calibration constants
new s1etad.ql module for geocoded quick-look images generation

Implement ETAD-DLR-PS-0014 “Product Format Specification” v1.2.
The burst catalogue initialization and the s1etad.product.Sentinel1Etad.s1_product_list() method have been re-implemented to exploit NetCDF instead of XML (30% faster product loading).
All notebooks have been update to use the new demo products (with updated format).
The back-geocoding implementation has been simplified and improved (caching of ECEF coordinates during guess computation).
Fixed s1etad.product.Sentinel1Etad.iter_bursts() in case of empty selection.
Fixed KMZ generation in case of missing slices.
Added min/max range time attributes to s1etad.product.Sentinel1Etad class.
New notebook providing a basic step by step guide to perform the correction of a single Sentinel-1 SLC burst with the timings provided by the S1-ETAD products.
Now the s1etad.product.Sentinel1Etad.s1_product_list() always returns a list. Previously a string was returned in case of single swath.
Fixed the s1etad.product.Sentinel1Etad.query() method in the case in which the product_name parameter is used to search for S1 Standard (“S”) products.
Always use the Sphinx RTD Theme (also for local builds).

Now s1etad is a package.
Improved get_footprint methods:
- support for extended selection semantics (also accept the result of a query as parameter)
- support for the merge option: now it is possible to request a single “merged” footprint; by default the method returns the set of footprints of all bursts
New s1etad.product.Sentinel1Etad.get_statistics() method.
Added missing attributes to s1etad.product.Sentinel1Etad, s1etad.product.Sentinel1EtadSwath and s1etad.product.Sentinel1EtadBurst classes.
Removed s1etad.product.Sentinel1Etad.xpath_to_list() method from the public API (the private one is still available)
Strongly improved KMZ export function.
- new dedicated s1etad.kmz module (providing the s1etad.kmz.s1etad_to_kmz() function)
- removed the obsolete s1etad.product.Sentinel1Etad.to_kml() method
New methods to find points (and geometries) intersecting the burst/swath/product footprint.
New method and functions for direct and inverse geocoding (approximated algorithm)
New Command Line Interface (CLI) for basic functions (only “export-kmz” at the moment).
Documentation:
- added instructions to install via conda packages
- added pointers to “stable” and “development” (latest) version of the documentation

Improved packaging and docs.

Initial release.