Model of electromagnetic plane-wave propagation through a column of polycrystalline ice, composed of vertically-stacked, horizontally-homogeneous layers with unconstrained permittivity tensors (orientation fabrics).
Documentation:
Rathmann et al., 2021, Geophysical Research Letters.
Acknowledgements:
Builds on work by Yeh (1980), Xu and others (2000), Passler and Paarmann (2017), Passler and others (2020), and Jeannin (2019).
See the Jupyter notebook for a demonstration of how to use the model (experiments/demo/demo.ipynb)
In short, the model layer stack is initialized by specifying either the spectral coefficients of the fabric orientation distribution function (ODF) with depth, or by specifying the second-order structure tensor with depth. Thereafter, radar returns can easily be calculated and plotted by specifying the characteristics of the transmitted plane wave.