Code PYRAT (PYthon RAy Tracing)
Tracing of radio waves in Earth's ionosphere
Python implementation of ray tracing equations stated in PhD thesis of Rice (1997)
Rice W.K.M, 1997, "A ray tracing study of VLF phenomena", PhD thesis, Space Physics Research Institute, Department of Physics, University of Natal
Electron/proton stratification according to Yabroff (1961) + IRI model available
Geometry is 2D polar