Ground Transmitter Waves in the Magnetosphere and Their Role in Electron Scattering

structure oD is stored in matlab mat file, which represents diffusion coefficients for NWC transmitter signals. NWC_icase06xxx_v3.mat xxx=122 for (ducted propagation, night) xxx=222 for (nonducted propagation, night) xxx=110 for (ducted propagation, day) xxx=210 for (nonducted propagation, day) oD structure contains the fields Daa pitch angle diffusion coefficients in unit of (kg m/s)^2/s Dpp momentum diffusion coefficients in unit of (kg m/s)^2/s Dap mixed pitch angle and momentum diffusion coefficients in unit of (kg m/s)^2/s p electron momentum, in kg m/s pa, equatorial pitch angle, in deg en: electron energy in eV. l : L-shell value mlon: magnetic longtitude in deg Diffusion coefficients have the 4 dimensions, with first for energy, second for equatorial pitch angle, third for L-shell, and the last for magnetic longitude.