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Bump to version 0.4

See merge request !20

# Conflicts:
#   setup.cfg

* Add methods to calculate the temporal lag between the two on-board
receivers using the spectral support method.

Update derived_geo.py

See merge request !18

* We were forgetting to multiply by 2π/c₀

No,
"""
type
    Description of returned object.
""""
is not a sufficient description of what a method returns.

Added computation of ATI lag, spectral shift and dkz for a Harmony-like along-track antenna separation.

Bump to version 0.3

See merge request !17

* Change minimum Python version to 3.9

Update main branch with BistaticRadarGeometry changes

See merge request !16

Update derived_geo.py

See merge request !15

Fixed sign of companion delay so that a positive delay puts the companion behind the reference satellite.

A bit of docstrings to document spectral support functions.

tested and bugfixed.

added code for spectral support (untested)

* SingleSwath and BistaticGeometry have the same methods names now
* Added a docstring to the methods

added inc2r_t and inc2r_r methods to get transmit and receive range as function of angle of incidence.

Create bistatic_pol.py

See merge request !12

Added pI computation

changed order of interpolators and added rotation for h-tx

Some fixes to properly call methods in parent class.

Added some code for the monostatic equivalent geometry, and modified code so that derived classes retain most functionality (issues with name mangling and also with the inheritance of property methods

* Remove DS_Store files

Release 0.2.1 to fix #3

Closes #3

See merge request !14

Fix deprecated call to collections.sequence

See merge request !13

* collections.Sequence was an alias for collections.abc.Sequence that
was deprecated. It was removed in Python 3.10 which means that the
__getitem__ method of the OrbitalParameters dataclass gives an
AttributeError in 3.10
* Fixes #3

Modified elfouhaily function so that all inputs and outputs are radians. Added methods and init code to provide the (relative) norm of the Elfouhaily pol vectors so that we can use them to scale scattering coefficients between geometries (i.e. from a monostatic equivalent to bistatic)

replicated inc2slave_inc to expose it directly as a method of BistaticRadarGeometry and  (hence)CompanionPolarizations

Also changed output of inc2northing to radians for consistency

Fixed rogue input angle in degrees

Added azimuth phase spoiling

Added azimuth phase spoiling code to NESZ and AASR calculation (not yet to RASR), and fixed pointing error in aasr code (did not affect results) for phase-spoiled elevation patterns.

See merge request !10