  The non-ducted propagation characteristics of the VLF waves in the inner
magnetosphere were studied with respect to their frequency, source
localization, and initial wave normal angle, between the wave-normal and the
background magnetic field. The ray tracing software based on multi-components
cold plasma approach was developed by use of the IGRF magnetic field model and
the GCPM model of plasma density. We described dynamics of the wave-normals
direction during its propagation and magnetospheric reflection. We showed that
whistler waves can be reflected when lower hybrid resonance frequency becomes
greater than the wave frequency: w_LH>w. It corresponds to the magnetic
latitude of ~50 degrees. The simulation results confirmed the inapplicability
of the quasi-longitudinal approximation to describe the propagation of
magnetospheric whistlers. The simulation results of chorus emissions
propagation, which used realistic distributions of waves on the initial
parameters were presented. Particularly, we obtained distributions of chorus
emission waves in dependence on the wave-normal directions for different
magnetic latitudes. It is required for studying diffusive processes in the
radiation belts. The results were found to be in a good agreement with the
CLUSTER STAFF-SA measurements.
